Ok just got a 88 t2 the plugs where fouled out changed them and it runs and stays idled now but now its slugish an popping and back fireing like crazy when I get on it it has a large streetport walbro 255lph fuel pump three inch intake three inch exhaust no emmisions what else could it be

 

Come on no body knows

 

If the problem begin when you change your plug it's probably there you wanna start.

Check first if your spark plug cable are correctly plug and not mix up!

Eric

 

Ok on the leading coil L2 wire with the white tape is on the back bottom houseing the one with out on l1 is on the front bottom housing and t2 is on the back top houseing and t1 is going to top front houseing

 

need more info......

sluggish when you rev it? sluggish when you drive it?
check for spark?
did you put the spark plugs wires back correctly since you changed plugs?
check timing?
adjust tps?........

can be alot of things......

 

your plug wires seem correct.

I'd check to see if you're getting spark...can be done easily with a timing gun.....

do you have an aftermarket fpr for that walboro fuel pump?

check compression too.....

 

It does it for like the first thousand rpms while reving and driving and no after market fuel pressure reg and don't think it has tps not sure though

 

You have a TPS but i really think that the problem still your plug. So it dont mix up but recheck for the cable to be connect far enought on the spark plug. It very hard to properly snap the cable on the plug so maybe you just have a bad connection. It happen to me last time i change my plug.

I hope you understand me since i'm a french canadian

Anyway good luck but keep in mind that the problem start when you changed your plug so the problem is around. Check also if you have accidently unplug something near the plug and cable

Eric

 

Have you verified your timing and that the CAS is stabbed correctly?

That pump will cause the car to run rich unless you have upgraded the fuel pressure regulator.