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01-05-2004, 11:14 PM
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#1 |
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Just here to help
 
Join Date: Jan 2002
Location: Norwood,Mo
Posts: 3,893
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Need some engine help
Hey guys,I need some advice on the 350 sbc.I was on my way home tonight(about an hour drive)and about half way home the truck spit one time then when i pull in the driveway it tries to die on me.Only way to start it is to hole the pedal to the floor,it wont idle.It is a fairly new 1406 edlebrock and a new engine.I have3 had trouble with dist,coils but have changed all of them.I havent done anything to it lately so i am stumped.Any ideas on what it is?Thanx
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01-05-2004, 11:26 PM
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#2 |
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Registered User
Join Date: Aug 2001
Location: escondido, ca 92026
Posts: 1,222
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that's not a lot to go on... are there any new noises, either while driving or idling... did it behave normally while driving, as far as acceleration and power???
when you say it spit, do you mean it backfired or did it stop running for an instant...??? are you running points or hei...??? will it stay running in neutral/park if you give it gas...???
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'72 short step, 350, 700R4, tilt, ps, pdb, a/c, lowered coils, etc., other work in progress... San Diego, CA 72 Stepside Project |
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01-05-2004, 11:55 PM
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#3 |
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Just here to help
Join Date: Jan 2002
Location: Norwood,Mo
Posts: 3,893
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No new noises,It drove great on the way home,like always.I believed it backfired throught the carb,Hei and it will stay running as long as you give it gas.Anything else?Thanx
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01-06-2004, 12:42 AM
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#4 |
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Just here to help
Join Date: Jan 2002
Location: Norwood,Mo
Posts: 3,893
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Come on guys i need to get this fixed before it strands me in the cold.HELP!!!!!!!!!!!!!!!!!!!
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01-06-2004, 12:46 AM
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#5 |
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Drive it like U stole it
Join Date: Mar 2000
Location: tunnel hill ,GA /Chatt,TN
Posts: 956
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Is it getting to much gas? checked for a MAJOR vacuum leak? a small back fire could have blown off a vauum cap or a gasket .
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71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100 |
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01-06-2004, 12:49 AM
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#6 |
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Just here to help
Join Date: Jan 2002
Location: Norwood,Mo
Posts: 3,893
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Thanx i will check that in the morning,going to be around 7 degrees then............lol
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01-06-2004, 12:57 AM
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#7 |
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GM ONLY BABY!!!
Join Date: Oct 2003
Location: Fort Wayne, IN.
Posts: 1,998
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What about some bad gas? Ya, check all the plug wires and make sure they are all connected. I would also pull the #1 spark plug and see if it is running too rich or lean. The plug should have a slightly tan tip if it is burning good.
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2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride   http://www.cardomain.com/ride/707879...mc-c-k-pick-up |
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01-06-2004, 12:58 AM
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#8 |
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GM ONLY BABY!!!
Join Date: Oct 2003
Location: Fort Wayne, IN.
Posts: 1,998
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Oh ya. Always err to the rich.
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2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up |
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01-06-2004, 04:24 AM
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#9 |
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Registered User
Join Date: Mar 2001
Location: springfield ill
Posts: 836
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sounds almost like the choke is stuck
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springfield illinois 2003 custom (harley)built from scratch 68 swb |
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01-06-2004, 11:50 AM
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#10 |
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Senior Member
Join Date: Dec 2001
Location: Redding,CA...USA
Posts: 4,736
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as cold as it is..could the fuel line be freezing? a little water in the gas can freeze and block passages in the carb
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01-06-2004, 10:28 PM
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#11 |
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Just here to help
Join Date: Jan 2002
Location: Norwood,Mo
Posts: 3,893
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It ran ok on the way home tonight.This morning i tightened the carb just a little but about halfway home again tonight it backfired through the carb again.Any ideas?
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01-06-2004, 10:38 PM
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#12 |
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Registered User
Join Date: Dec 2002
Location: Hills of Western Mass
Posts: 626
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A long shot but check your fuel lines for any small holes or the rubber hoses for cracks that could be sucking air.
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86 Silverado C10 back to 305 power! 67 C30 Dually Dump, with 350 transplant, Rockhauler 05 Duramax 3500 "If at first you don't succeed, try a bigger hammer" Member of the 1-Ton club! |
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01-06-2004, 11:28 PM
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#13 |
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Registered User
Join Date: Jul 2003
Location: Cypress, Tx
Posts: 4,005
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Make sure your distributer holdown isn't loose and your hei isn't turning. It could be you need to adjust the carb because of the cold weather also.
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1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE |
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01-06-2004, 11:42 PM
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#14 |
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Just here to help
Join Date: Jan 2002
Location: Norwood,Mo
Posts: 3,893
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How do i adjust the carb?Not done that on a edlebrock before and i have heard that they are touchy.
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01-07-2004, 12:03 AM
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#15 |
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Account Suspended
Join Date: Dec 2003
Location: Texas
Posts: 2,686
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There not touchy i start off at 1 1/2 turns out and fine tune from there some times try 2 1/2 if its a large engine
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01-07-2004, 04:44 PM
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#16 |
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It's a catastrophic success.
Join Date: Jan 2003
Location: Oklahoma
Posts: 2,077
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sounds like a sticking float?
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01-07-2004, 05:10 PM
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#17 |
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Senior Member
Join Date: Jan 2000
Location: Cincinnati, Ohio
Posts: 1,492
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I had the float stick on my 1406, but you should see black smoke rolling out of the exhaust.
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