truck starting - The 1947 - Present Chevrolet & GMC Truck Message Board Network

pokethesmot · 02-13-2009, 03:16 PM

man it allot of tries and baby for my truck to start expeshly if it hasn't bean ran in a day or too...what would cause this i have a sbc 400 also how easy/hard is it for you guys to start your trucks

James McClure · 02-13-2009, 04:09 PM

Poke, it have a carb or FI? Quads have a tendancy to drain down from the plugs below the secondary jets. If it starts with no problem if run every day look there first. When it does finally start does it blow black smoke? Its easy to fix once you get the throttle plate off. If it's wet with gas you found it. You'll see the plugs in the center of the carb. Just tap them tight with a punch and then restake them. With 2 part epoxy cover the plugs and reassemble. Make sure everything is clean and dry before using the epoxy. Then make sure to change the oil. This doesn't apply to FI or if the engine doesn't start well normally or it has a 2 barrel carb. jim

Nolowrider · 02-13-2009, 04:11 PM

Quote:

Originally Posted by pokethesmot

man it allot of tries and baby for my truck to start expeshly if it hasn't bean ran in a day or too...what would cause this i have a sbc 400 also how easy/hard is it for you guys to start your trucks

"Man, it seems to take alot of tries and (not sure what that means) for my truck to start, especially if it has not ran in a day or two. What would cause this? I have a SBC 400, also how hard is it for your trucks to start?"

I took the liberty of re-typing your question. Might get more help. I also threw a few punctuation marks in there for you.

Just picking you. Don't take it personal. I am not perfect either, but.........hey

More information on your problem needed. What type of carberator do you have? Edelbrock's and Holley's don't really like alot of fuel pressure. To much pressure tends to overide the needle and seat. The fuel then drains down into the cylinders causing flooding. The float may be sticking. You may want to take the bowls off and clean everything real good. Do you have a fuel filter?

pokethesmot · 02-13-2009, 04:27 PM

i have a quad carb and yeah i have a brand new fuel filter

Nolowrider · 02-13-2009, 04:34 PM

I don't know too much about quad's, but a good cleaning couldn't hurt it. Check your choke, it may be stuck.

pokethesmot · 02-13-2009, 04:46 PM

how would i go about cleaning it

79blazer · 02-14-2009, 02:59 AM

Mine needs a light pump of gas whilst cranking, then a 2 second break... Then turn key again, and she fires right up! Mine's a Durajet (half quad.) If I stand on the starter she is real slow to start.

fast75 · 02-14-2009, 07:40 AM

mine will fire right up, unless its been sitting a couple of weeks. then just a couple of pumps on the accelerator and boom there it is. yeah, boom........

84 400 · 02-14-2009, 07:47 AM

If my 77 sits I gotta pump it and crank pump and crank. I rebuilt the carb and it starts alot easier but it does sit for weeks at a time without being run. I would clean/rebuild the quadra jet, clean/replace the pluggs, and check your timing. All of this will help the motor to run alot better and will help with starting.

Napa sells a rebuild kit for the quadra jet for around $22.00. I suggest with any carb rebuild / cleaning you do it in one sit down from dissasembly to re assembly. That way you don't loose or put anything back on wrong.

heavychevy79 · 02-15-2009, 02:22 AM

Hey bud, get an Edelbrock 1406 carb with a four hole adapter, it's a good
upgrade if your old carb is tired.
Rebuild kits don't come with throttle shaft bushings, so it will still suck air if
they are worn out, even though it's "rebuilt".
Your fuel pump may be letting the fuel drain back into the tank, making it take a long time to start.

asphaltburner · 02-15-2009, 01:57 PM

Yo! heavychevy79!!
Love the attached image!!
Todd.

02-13-2009, 03:16 PM	#1
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	truck starting man it allot of tries and baby for my truck to start expeshly if it hasn't bean ran in a day or too...what would cause this i have a sbc 400 also how easy/hard is it for you guys to start your trucks __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"

02-13-2009, 04:09 PM	#2
James McClure One shot, one kill. Join Date: Dec 2007 Location: Saratoga Springs NY Posts: 859	Re: truck starting Poke, it have a carb or FI? Quads have a tendancy to drain down from the plugs below the secondary jets. If it starts with no problem if run every day look there first. When it does finally start does it blow black smoke? Its easy to fix once you get the throttle plate off. If it's wet with gas you found it. You'll see the plugs in the center of the carb. Just tap them tight with a punch and then restake them. With 2 part epoxy cover the plugs and reassemble. Make sure everything is clean and dry before using the epoxy. Then make sure to change the oil. This doesn't apply to FI or if the engine doesn't start well normally or it has a 2 barrel carb. jim __________________ 1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shotJim or Paladin whichever you choose.

02-13-2009, 04:27 PM	#4
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	Re: truck starting i have a quad carb and yeah i have a brand new fuel filter __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"

02-13-2009, 04:34 PM	#5
Nolowrider Senior Member Join Date: Jan 2005 Location: New Orleans Posts: 1,365	Re: truck starting I don't know too much about quad's, but a good cleaning couldn't hurt it. Check your choke, it may be stuck.

02-13-2009, 04:46 PM	#6
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	Re: truck starting how would i go about cleaning it __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"

02-14-2009, 02:59 AM	#7
79blazer Registered User Join Date: Aug 2006 Location: Mesa, Arizona Posts: 136	Re: truck starting Mine needs a light pump of gas whilst cranking, then a 2 second break... Then turn key again, and she fires right up! Mine's a Durajet (half quad.) If I stand on the starter she is real slow to start. __________________ 79 Blazer Cheyenne, 2wd 305 3.42 stock 85 Caprice, TBI converted, new 350 crate motor, Monte Carlo SS Wheels, Bilstein shocks,

02-14-2009, 07:40 AM	#8
fast75 Go Hard or Go Home! Join Date: Dec 2008 Location: quitman, tx Posts: 261	Re: truck starting mine will fire right up, unless its been sitting a couple of weeks. then just a couple of pumps on the accelerator and boom there it is. yeah, boom........ __________________ 75 short wide 350, some mods, scare the piss outta ya quick. 2008 Dodge crew cab. YEAH, it's got a hemi, your ass is going to jail quick. Some day's, it's just not worth chewing through the restraints................................

02-14-2009, 07:47 AM	#9
84 400 Sb 400 club Join Date: Nov 2005 Location: NH / MA Posts: 2,746	Re: truck starting If my 77 sits I gotta pump it and crank pump and crank. I rebuilt the carb and it starts alot easier but it does sit for weeks at a time without being run. I would clean/rebuild the quadra jet, clean/replace the pluggs, and check your timing. All of this will help the motor to run alot better and will help with starting. Napa sells a rebuild kit for the quadra jet for around $22.00. I suggest with any carb rebuild / cleaning you do it in one sit down from dissasembly to re assembly. That way you don't loose or put anything back on wrong. __________________ 1984 chevy c10, built 400sb,.(SOLD) 77 K10 Project / daily driver "The Grinch" http://67-72chevytrucks.com/vboard/s...d.php?t=318363 1956 Willys Wagon (327 chevy) Project (Now Buick 225) 1980 Corvette L-48 4 speed 1992 Mustang GT built 5.0 5 speed 1985 C10 LWB Sold 1982 K10 SWB plow truck Parted out 1986 D30 M1028 fire brush truck Parted out

02-15-2009, 02:22 AM	#10
heavychevy79 Cheyenne Super Join Date: Nov 2008 Location: Dallas Texas Posts: 545	Re: truck starting Hey bud, get an Edelbrock 1406 carb with a four hole adapter, it's a good upgrade if your old carb is tired. Rebuild kits don't come with throttle shaft bushings, so it will still suck air if they are worn out, even though it's "rebuilt". Your fuel pump may be letting the fuel drain back into the tank, making it take a long time to start. Attached Images Last edited by heavychevy79; 02-15-2009 at 02:25 AM.

02-15-2009, 01:57 PM	#11
asphaltburner Registered User Join Date: Jul 2008 Location: Ault, Colorado Posts: 862	Re: truck starting Yo! heavychevy79!! Love the attached image!! Todd. __________________ '78 3/4 ton 4x4 custom "Todd-built" FRANKENTRUCK!

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