car unloads under pressure
07-05-2003, 10:14 PM
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Car: 2001 Silverado (I miss my 3rd gens)
Engine: 4.8
Transmission: 4L60E
car unloads under pressure
hey everyone, thanks for checking this forum out. My '86 305 TPI is bogging down when you step on the gas. It may be old plugs but the lady I bought it from says it had a complete tune-up last fall. 
?
Any help will help.
?Any help will help.
07-06-2003, 09:26 PM
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Had the same problem - start by checking the ignition module - fuel filter - or the coil.
https://www.thirdgen.org/techbb2/sho...hreadid=187418
https://www.thirdgen.org/techbb2/sho...hreadid=187418
07-06-2003, 11:15 PM
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Re: car unloads under pressure
Originally posted by firebirdconv92
My '86 305 TPI is bogging down when you step on the gas. It may be old plugs but the lady I bought it from says it had a complete tune-up last fall.
My '86 305 TPI is bogging down when you step on the gas. It may be old plugs but the lady I bought it from says it had a complete tune-up last fall.
pull a plug, look at it, check the center electrode, is it rounded over?
are the correct plug for your application?
check the inital timing (bypass disconnected) 4-6° BTDC?
fuel pressure, timing, ill TPS can cause hesitation, bogs and lack
of performance.
airdeano
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