accelaration problem and popping sound coming from exhaust
05-30-2010 | 10:26 PM
#1
Thread Starter
AutoX
Joined: May 2010
Posts: 10
Likes: 0
From: Huntington Beach, CA
accelaration problem and popping sound coming from exhaust
I have a 1984 n/a.
first problem
The car starts and idles fine, but when i go to accelerate for the first time it will stutter for a few seconds and then wake up and go. it then accelerates fine.
second problem
after i have been driving the car for about 10-15 minutes i hear a popping sound coming from the exhaust. it usually happens on deceleration, but sometimes occurs on acceleration as well.
i have been using quality fuel from many different stations over an extended period of time and it still has the problems so i don't believe its a fuel quality problem
what are your thoughts and opinions on what may be causing this
first problem
The car starts and idles fine, but when i go to accelerate for the first time it will stutter for a few seconds and then wake up and go. it then accelerates fine.
second problem
after i have been driving the car for about 10-15 minutes i hear a popping sound coming from the exhaust. it usually happens on deceleration, but sometimes occurs on acceleration as well.
i have been using quality fuel from many different stations over an extended period of time and it still has the problems so i don't believe its a fuel quality problem
what are your thoughts and opinions on what may be causing this
05-30-2010 | 11:09 PM
#2
Racer
Joined: Mar 2010
Posts: 406
Likes: 1
From: Binghamton NY
05-30-2010 | 11:42 PM
#3
Nordschleife Master
Joined: Dec 2007
Posts: 7,759
Likes: 1
From: Fly Away
pull the vacuum lines off the damper and FPR and check them for signs of fuel in them (the lines) if you find fuel you have found your bad FPR or Damper...
Check your timing to make sure it is still lined up at TDC #1..
Check you Idle stab system to make sure it is functioning... quick test is to unplug the actuator while the car is running.... if the idle changes (for the worse) it is working...
check you spark plugs..
check your fuel pressure (and fuel filter)
Check your timing to make sure it is still lined up at TDC #1..
Check you Idle stab system to make sure it is functioning... quick test is to unplug the actuator while the car is running.... if the idle changes (for the worse) it is working...
check you spark plugs..
check your fuel pressure (and fuel filter)
06-01-2010 | 01:17 PM
#7
Three Wheelin'
Joined: May 2004
Posts: 1,845
Likes: 1
From: Downtown Los Angleles & Denton TX
Catalytic converter catylist worn down and turning sideways.
It's honeycomb, so if it turns, it will clog exhaust flow.
I have had this happen before.
drop rear exhaust pipe and look up in there.
to fix, get some rebar from the local hardware (home depot etc.. ) and break apart till it flies out.
enjoy added acceleration
It's honeycomb, so if it turns, it will clog exhaust flow.
I have had this happen before.
drop rear exhaust pipe and look up in there.
to fix, get some rebar from the local hardware (home depot etc.. ) and break apart till it flies out.
enjoy added acceleration
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06-02-2010 | 05:37 AM
#8
Thread Starter
AutoX
Joined: May 2010
Posts: 10
Likes: 0
From: Huntington Beach, CA
I have the exhaust out already so ill check it out in the morning.
Unfortunately its a Ca car so if it is the cat will have to be replaced.
Any good Ca legal hi flow cat options?
I was thinking about putting one on anyways.
I just found out my clutch parts have come in so this will probably get pushed back till next week or so
as car is lifted and everything has been dropped to get to clutch
Unfortunately its a Ca car so if it is the cat will have to be replaced.
Any good Ca legal hi flow cat options?
I was thinking about putting one on anyways.
I just found out my clutch parts have come in so this will probably get pushed back till next week or so
as car is lifted and everything has been dropped to get to clutch
