Carbed c4 questions
Safety Car
Joined: May 1999
Posts: 3,651
Likes: 5
From: Atlantis
Cruise-In I Veteran
You've already got one of the best engineered fuel delivery systems ever devised by mankind.
I wouldn't swap a totally fubared TPI system for 27 carburetors.
Don't swap it, fix it. There's not a whole lot to it. It's simple, mostly diagnoses itself and will run pretty good with almost every sensor on it defective.
Go over to the C4 Scan and Tune section and read through the sticky notes.
That'll take about an hour.
Afterwards, you'll have a pretty good idea how it works.
The ones that can sort of throw it a little (but it WILL most likely still run) are:
MAF
TPS
IGN module in the distributor
ECM
Do a resistance check on the injectors (10 buck DVOM from Radio Shack). Then do a leakdown check on them.
A fuel pressure tester only cost about 30~35 bux. Get one of those and check the FP.
TPI IS pretty easy to learn and work on. You can do it. We can help.
CFI-EFI is VERY helpful on here as are a bunch of other folks.
I wouldn't swap a totally fubared TPI system for 27 carburetors.
Don't swap it, fix it. There's not a whole lot to it. It's simple, mostly diagnoses itself and will run pretty good with almost every sensor on it defective.
Go over to the C4 Scan and Tune section and read through the sticky notes.
That'll take about an hour.
Afterwards, you'll have a pretty good idea how it works.
The ones that can sort of throw it a little (but it WILL most likely still run) are:
MAF
TPS
IGN module in the distributor
ECM
Do a resistance check on the injectors (10 buck DVOM from Radio Shack). Then do a leakdown check on them.
A fuel pressure tester only cost about 30~35 bux. Get one of those and check the FP.
TPI IS pretty easy to learn and work on. You can do it. We can help.
CFI-EFI is VERY helpful on here as are a bunch of other folks.
Race Director
Joined: Dec 2000
Posts: 17,551
Likes: 26
From: El Paso Texas
Originally Posted by LT-4 CE
Were the fuel pumps in '84 electric or mechanical?
Opps, looks like he has an '85.
Opps, looks like he has an '85.
