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07-09-2009, 11:06 PM
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#1 |
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Registered User
Join Date: Feb 2008
Location: Surprise, Ariz.
Posts: 186
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backfiring 350v 5.7l man trans
Hi, went through process of finding tdc. Have timed eng at 8d btdc with vacumm plugged and hose plugged. When i hooked up the vac hose the timing changed TO advance. The eng starts but when i accel the carb backfires. Do i have to take out the dist and find tdc again.
thanks in advance frankyjoe 
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07-10-2009, 01:52 AM
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#2 |
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Cheyenne Super
Join Date: Nov 2008
Location: Dallas Texas
Posts: 545
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Re: backfiring 350v 5.7l man trans
Normally if it backfires through the carb the timing is retared.
Turn it counter clockwise and see if that helps before you pull it. |
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07-11-2009, 11:45 AM
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#3 |
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Arrived on a Pale Horse
Join Date: Mar 2007
Location: SnagTown Indiana
Posts: 2,524
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Re: backfiring 350v 5.7l man trans
When you plug the vac hose in at idle on a stock setup, the timing shouldn't change. If it does, the hose is plugged into the wrong port. You need to find a ported vac source instead of full manifold source.
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Jason 87 V30 350TBI/400 White w/Boss V-plow 89 R3500 CC SRW |
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