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11-26-2004, 08:18 PM
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#1 |
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Dude...I'm a CHICK
Join Date: Jul 2000
Location: Lakeland Georgia
Posts: 6,192
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Help Please, My Burb is protesting...
I just dont think she appreciated having to get up and go to work today. I admit shes been runnin a little rough lately, and the weather has been getting colder. I know shes due for new plugs etc. But, This morning she started hard, and as I was driving, outta no where, she died, I pumped the gas and she came back to life, died again this time I put er in N and restarted , she started strong, no struggling. I was a little low on fuel, but not sucking fumes. I got her to the Chevron, put about 1/2 tank in her and she ran fine all the way to work, (14 mi). AFTER work, I let er idle and warm up, shes still runnin a little rough, but runnin. I start home, get about half way, she dies, (no warning, no sputtering or anything, just ....off) Then just as I throw her in N to restart, she starts up on her own and BACKFIRES, 3 times. Prolly scared everyone with in a country mile chitless, myself included.
Fuel filter?? Plugs?? Could the starting hard in the mornings be the carb?? or choke?? Im pretty sure I need a new choke spring, had a guy order one for me but it was the wrong one, (mine was under the one he ordered was over or vice versa) Where can I get a NEW correct spring?? What could the problem be?? Shes NEVER back fired before. Thanks for the help. junk
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~*~*~*~*~*~*~*~*~*~*~*~*~* "The unexamined life is not worth living" -Socrates ~*~*~*~*~*~*~*~*~*~*~*~*~* '71 GMC Suburban 4x4 |
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11-26-2004, 08:25 PM
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#2 |
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Registered User
Join Date: Nov 2003
Location: Alexandria, VA
Posts: 1,534
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Ever replaced the timing chain? Could be a fuel filter or pump getting ready to go. sounds like fuel mixture is lean or timing is off.
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'72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction.   
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11-26-2004, 08:30 PM
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#3 |
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Dude...I'm a CHICK
Join Date: Jul 2000
Location: Lakeland Georgia
Posts: 6,192
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Chain was replaced about 4 years ago, guess she could be outta timing, not sure how the fuel would be "lean".
Thanks
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~*~*~*~*~*~*~*~*~*~*~*~*~* "The unexamined life is not worth living" -Socrates ~*~*~*~*~*~*~*~*~*~*~*~*~* '71 GMC Suburban 4x4 |
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11-26-2004, 08:36 PM
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#4 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Jodie, didn't they replace the engine 2 years ago?
Do you have points or HEI distributor? |
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11-26-2004, 08:39 PM
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#5 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Do you have a points type distributor or have you converted to HEI? What you describe sounds like a points distributor problem when the gap closes up from wear.
I would suspect the ignition more than fuel since it backfires when running down the road. If you have HEI a module or pickup coil can cause similar problems. Jim |
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11-26-2004, 08:40 PM
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#6 |
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Dude...I'm a CHICK
Join Date: Jul 2000
Location: Lakeland Georgia
Posts: 6,192
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Andrew, engine was replaced less than 2 years ago, I have HEI. Now would be a good time to come over for dinner
 
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~*~*~*~*~*~*~*~*~*~*~*~*~* "The unexamined life is not worth living" -Socrates ~*~*~*~*~*~*~*~*~*~*~*~*~* '71 GMC Suburban 4x4 |
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11-26-2004, 08:42 PM
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#7 |
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Senior Member
Join Date: Jan 2001
Location: Virginia Beach, Va, USA
Posts: 1,680
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Fuel Filter?
Jodie,
If you like most people tend to run the vehicle low on gas, IE below a quarter of a tank, alot of the time you might have picked up some trash in the fuel filter. I had that happen with a F*rd I used to own. Had to drain all the fuel out of the tank, clean it out, and change the fuel filter. Never had a problem again. Or you might have just got some bad gas. My two cents, Kerry
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1967 C10 Got it back after three years Boy I sure missed Peppy 1969 Chevelle 1990 IROC Z Convertible 2002 Silverado LT |
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11-26-2004, 09:02 PM
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#8 |
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Dude...I'm a CHICK
Join Date: Jul 2000
Location: Lakeland Georgia
Posts: 6,192
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Something else I forgot to mention. A couple times in the last 2 weeks or so, my truck would "diesel" when I went to shut it off. Im going to pull the filter and check it in the morning.
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~*~*~*~*~*~*~*~*~*~*~*~*~* "The unexamined life is not worth living" -Socrates ~*~*~*~*~*~*~*~*~*~*~*~*~* '71 GMC Suburban 4x4 |
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11-26-2004, 09:05 PM
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#9 |
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BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 20,021
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this happened to me recently in my burb. when i did get it to start the exhaust was very black. i popped open the carb(stock quadrajet) and blew it all out. i didnt see anything that looked bad. i put it back together and tossed in a new filter and its ran fine ever since.
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11-26-2004, 09:15 PM
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#10 | |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Quote:
As far as running low on fuel and suckin up crap, I have never believed these stories. I have never seen it happen, and I have run out of fuel many, MANY times when my guage wasn't working. Also, it just doesn't make any sence. Yout fuel is sucked from the bottom of the tank. Regardless of how much fuel is in there, it is sucked from an inch or so from the floor of the tank. 99% of the junk that gets in your tank...including water...goes straight to the bottom. So it'll either get sucked up asap, or it'll just sit there. I'm not trying to call you a liar, just saying it makes no sence at all. |
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11-26-2004, 09:17 PM
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#11 | |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Quote:
More importantly, whats for breakfast? <insert slutty smiley> |
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11-26-2004, 09:35 PM
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#12 |
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Dude...I'm a CHICK
Join Date: Jul 2000
Location: Lakeland Georgia
Posts: 6,192
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OK... something else just came to mind. When my truck is cold, when I start er up, she dont idle down easily, even after shes warmed up, also the brakes feel "robbed", not like needs pads, but just ,,,,hmmmm. Not quite all there... is this making any sense
 .. (Atleaste I havent had to use the word, "thingie" yet) Kerry, thank you, gonna check that filter just for "funsies" CG, mine also has a Qjet, havent noticed black or dark smoke tho. Andrew, oddly enough, your reasoning make sense, lol. Will still check it tho. Gonna change the plugs Sunday, wires should be fine, unless theres something obvious, like a burnt one or something. Will try to check these before work in the morning. Dinner?? You name it darlin.... Breakfast??? Whats breakfast?? Must be that fruit and yogurt that I cram down my throat on my 10 min break...
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~*~*~*~*~*~*~*~*~*~*~*~*~* "The unexamined life is not worth living" -Socrates ~*~*~*~*~*~*~*~*~*~*~*~*~* '71 GMC Suburban 4x4 |
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11-26-2004, 09:36 PM
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#13 |
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Senior Member
Join Date: Jan 2001
Location: Virginia Beach, Va, USA
Posts: 1,680
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Trash in the tank
All I can tell you is what I have observed. I had trash in my fuel line that caused the vehicle not to run. After I flushed the tank and installed a new fuel filter it ran ok. Kerry
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1967 C10 Got it back after three years Boy I sure missed Peppy 1969 Chevelle 1990 IROC Z Convertible 2002 Silverado LT |
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11-26-2004, 09:39 PM
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#14 |
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Registered User
Join Date: Sep 2004
Location: Pleasanton, TX
Posts: 1,723
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I am confused, which isn't unusual, but still...
The timing chain was replaced 4 years ago but the engine was swapped out 2 years ago. So ummm, the engine that is in the burb now has a 4 year old timing chain in it? Anyway, sounds like a timing/firing issue, at least for the backfiring. Trash in the carb may make one spit, sputter and die but I don't see trash making one backfire. Noone been tinkerin under the hood have they? Years ago at work this guy goes out after work, gets in his 72 C10 and it's running like crap, spittin, backfiring. Was running fine that morning. Turns out some d***head decided it would be funny to swap a couple of plug wires around. 
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11-26-2004, 09:46 PM
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#15 |
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Dude...I'm a CHICK
Join Date: Jul 2000
Location: Lakeland Georgia
Posts: 6,192
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Tugowar... "YOURE" confused??
 ... "IM" confused. When the engine is changed, would the timming chain be an automatic change?? If so, then it was changed about 2 years ago.I dont "think" anyone has messed with my truck, but, I will check that too. Thanks for your input 
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~*~*~*~*~*~*~*~*~*~*~*~*~* "The unexamined life is not worth living" -Socrates ~*~*~*~*~*~*~*~*~*~*~*~*~* '71 GMC Suburban 4x4 |
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11-26-2004, 09:56 PM
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#16 |
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BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 20,021
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brake vacuum comes off the back of the carb...arent these oddball problems fun ?
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11-26-2004, 09:59 PM
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#17 |
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Dude...I'm a CHICK
Join Date: Jul 2000
Location: Lakeland Georgia
Posts: 6,192
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If theres anything "weird" odd" or "never happens" its gonna happen with my poor Burb
 Thanks again, I suspected a vacum leak, will also check that tomorrow when I have some daylight.
__________________
~*~*~*~*~*~*~*~*~*~*~*~*~* "The unexamined life is not worth living" -Socrates ~*~*~*~*~*~*~*~*~*~*~*~*~* '71 GMC Suburban 4x4 |
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11-26-2004, 11:37 PM
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#18 |
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Senior Member
Join Date: May 2004
Location: Seaside, Oregon
Posts: 1,789
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I would probably say it's either a vacuum leak of some sort or a timing issue. Isn't it frustrating to not be able to have everyone show up with beer and fix the dern thing
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-Greg My Chevy trucks, past and present: 1962 C10 SB Fleetside 1964 C10 LB Fleetside BBW 1966 C10 SB Fleetside 1966 C10 SB Fleetside BBW 1968 C10 SB Fleetside 1971 C10 LB Fleetside 1971 C10 SB Fleetside 1972 C10 SB Fleetside Cheyenne 1972 C10 SB Fleetside Cheyenne Super 1972 C10 LB Fleetside Cheyenne Super 1974 C20 Cheyenne 1979 K5 Blazer Cheyenne 1982 K10 SB Fleetside Custom Deluxe 1982 K10 SB Fleetside Scottsdale 1986 C10 SB Fleetside Silverado 2008 Silverado 1500 4x4 |
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11-26-2004, 11:44 PM
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#19 |
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68cst_ss490
Join Date: May 2001
Location: edmonton,canada
Posts: 1,363
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by chance it could be a distributor module on it s way out.Ive seen them do some weird things.. timing shouldnt change unless you change it, and the chain shouldntbe stretched too bad in 2 years.try the basics fule filter, air filter, plugs
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Dean edmonton,canada a winter wonderland 2005 Chevrolet Avalanche LT cold air intake, performance exhaust, Comp cams cam, jba shorty ceramic headers. http://www.cardomain.com/ride/3090973 |
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11-27-2004, 03:44 AM
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#20 |
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Registered User
Join Date: May 2000
Location: Storm Lake, Ia
Posts: 1,449
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I'll try one also
Sounds to me like the power piston in the carb is hanging up. Dumps to much fuel and floods out also with the extra fuel it won't idle well also with the extra fuel in the mainfold and cylinders she will diesel and maybe even backfire. Just my guess.
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11-27-2004, 09:42 AM
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#21 |
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Dude...I'm a CHICK
Join Date: Jul 2000
Location: Lakeland Georgia
Posts: 6,192
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OK, no vacuum leak evident, wires look to be in good condition on the outside, wires where they should be, fuel filter clean and free of debris. On start up, butterfly is not closing, stays wide open, would this be the "choke spring"?? and what kinds of other problems could this cause?? My biggest problem with using the suggestions that yall offer is, I dont know what things are, or how to check them.
 Makes me feel STUPID because the answer has GOTTA be right in front of me, and I dont know how to figure it out  Off tomorrow, hopefully can figure something out, for today, she gets to rest, my sister is taking me to work. Thanks so much, please keep the suggestions comming. take care junk
__________________
~*~*~*~*~*~*~*~*~*~*~*~*~* "The unexamined life is not worth living" -Socrates ~*~*~*~*~*~*~*~*~*~*~*~*~* '71 GMC Suburban 4x4 |
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11-27-2004, 10:36 AM
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#22 | |
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CCRider
Join Date: Feb 2000
Location: Olive Branch,MS,USA
Posts: 2,232
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Quote:
Sounds like a vacuum leak....could be the brake booster itself
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72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS |
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11-27-2004, 10:56 AM
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#23 |
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Registered User
Join Date: Apr 2004
Location: arkieland
Posts: 1,070
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Your automatic choke is not working correctly, its either not correctly set or inop. When engine is cold(sat overnight), a tap of the accelerator should close the choke blade. After startup, choke plate should crack open a small amount to allow engine to run, then the blade continues to open slowly as the engine warms up. Start with a new spring & then set the choke after engine has been sitting overnight. A manual may help w/setting procedure, if I was closer I would come do it. Brian
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11-27-2004, 11:08 AM
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#24 |
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The LuvShack Garage
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,468
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I THINK IT'S A PROBLEM WITH YOUR "LUV TROLL"
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Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Tow Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T |
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11-27-2004, 08:09 PM
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#25 |
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1971 C20 Custom Camper
Join Date: Mar 2003
Location: Ames/Shenandoah, IA
Posts: 1,435
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Could get your timing checked. If it's off it can cause it to diesel and run poorly. After I got my timing fixed my dieseling problem with my 454 stopped. I still gotta get my carb tuned and choke fixed though.
Good luck.
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'71 Chevy C20 Custom Camper, 454, TH400 '97 GMC K1500 5.7L |
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