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08-15-2008, 04:40 PM
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#1 |
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Registered User
Join Date: Jan 2006
Location: Houston
Posts: 434
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Engine hard to start
had to change my HEI module so i pulled the distributor and replaced the module and the coil at the same time. Once I got the truck started, I adjusted timing at around 8 degress based on mark on balancer. Since then the truck is very hard to start. The engine turns over real good but seems to flood and then smoke pours out of the carb without starting. I have to press the gas pedal to the floor and continue to try to start the engine. I keep the gas pedal floored and start trying to crank the engine. When I stop cranking the engine it putters to a start. I've adjusted timing numerous times all causing the engine to maybe start better but run worse. Can't seem to pinpoint problem. Any suggestions?
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08-15-2008, 06:37 PM
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#2 | |
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Registered User
Join Date: Dec 2007
Location: Santa Maria, Ca.
Posts: 1,423
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Re: Engine hard to start
Quote:
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69 Chevy 4x4 383 Power 
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08-15-2008, 06:45 PM
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#3 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Engine hard to start
what did you do to run electricity to the HEI?
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08-16-2008, 11:39 AM
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#4 |
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Registered User
Join Date: Jan 2006
Location: Houston
Posts: 434
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Re: Engine hard to start
The resistor wire is bypassed. HEI is getting 12 volts. It was starting fine before the HEI module went out. Do you think I may be off a tooth on the distributor?
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08-16-2008, 06:25 PM
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#5 |
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Registered User
Join Date: Jun 2008
Location: Jackson, Ca.
Posts: 674
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Re: Engine hard to start
Have someone turn the engine over while checking the timing, you might be off on the dist.
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Cable -K5 Blazer 2wd: 6.0 LQ4, 7875 Turbo, Tick Stage II Turbo Cam, Built 4L80e, RevMax Billet 3600, 9.5" 14 Bolt -Chevy 3+3 Crew Cab Dually: Cummins 12v P-Pump Swap, Compound Turbos, A2W Intercooler, NV4500HD, 4wd conversion, Radius Arms, Coilovers, Crossover Steering, etc Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=803608 |
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08-16-2008, 07:41 PM
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#6 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Engine hard to start
what is your base timing at?
Does the vac advance work? (unhook the hose from the intake/carb and suck on it) Is the vac advance hooked to engine vac, or ported vac? Are you getting spark knock... or 'pinging' when you drive it? |
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08-16-2008, 09:25 PM
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#7 |
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Registered User
Join Date: Jan 2006
Location: Houston
Posts: 434
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Re: Engine hard to start
O.k. readjusted distributor one tooth ccw and no more backfire thru carb or whatever was causing the smoke. Starts pretty easy. Set base timing at 9 degrees btdc. Also, no more pinging when accelerating.
Question, the dist vac is connected to front of carb. Very little vac at idle but there is a tiny little. I assume this is ported vac. There's another port on front of carb that has full vac at idle. I assume this is engine vac. Which one should dist be connected to? Does either make a difference on where to set timing? Last edited by stope4; 08-16-2008 at 09:25 PM. |
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08-17-2008, 10:35 AM
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#8 |
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Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: Engine hard to start
From what I seen in posts on here if your engine is pretty well stock it should be ported vacuum.
When setting the timing I always disconnect and plug the vacuum line to the distributor. Danny
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'67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E. |
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