demahfahbun106

ok heres the deal..i have an 87 turbo 2 with a jspec motor,3in rb turboback,hks supermega flow intake,hks fcd,re-wired walbro fuel pump..and today i went to go start my car and when it started it was spuddering alot, hard to get from 1000rpm-3000rpm...but after that its all perfect...when you get to like 3000rpm it starts back firing like a **** shppting a whole lot of flames( i mean ALOT ALOT)..i was holding the car at like 2000rpm for about 5 mins and it would not stay on by itself...also whenit was on black smoke was coming out of the exhaust...not sure if its a fuel problem or what but everyone that was around me when the car was on was saying that it smells like its burning a whole lot of fuel....I even took my plugs out and they were extremely black....what do you guys think???? thanks alot for the help.....

Rush120

if it was black smoke...you blew somethin my friend

demahfahbun106

Blew something like what???? can someone help me, really need to know whats going on...thanks again

rotorforce

Was this a recent motor swap? Perhaps the jspec had low compression?

demahfahbun106

i got the motor from a friend a lil while back...the car has been running perfectly since put together since february and even since the car probably was driven about 10 times......anyone have any ideas????anyone please help me

rotorforce

Have you changed out the fuel filter, or fuel pump sock?

demahfahbun106

no i havent changed the fuel filter under the hood but i have a walbro pump and that filter on it is new...Could that be the problem?????anyone else??

Aaron Cake

iTrader: (1)

Recently I had the exact same thing happen to an '86 NA. Turned out to be a bad fuel pressure regulator.

In your case you should start with a thorough deflooding and compression test, then check the fuel pressure or just swap the regulator if you have another around.

takahashiRyosukeFC3S

1: do a compression test - this will tell you if your seals are all OK and not ready to shred you turbo on their way out the exhaust.

2: do the least expensive fixes first. my '88 T2 ran like crap till about 3500rpm when i first got it. I replaced the fuel filter and I sent out the fuel injectors to get them cleaned by http://www.witchhunter.com/ I got them back and the car ran ALOT better. (filter ~$35, cleaning all 4 injectors ~$50) from there check you FPR and if needed replace that.

3: good luck and keep us updated.

Ryosuke

demahfahbun106

hey 2mmrw i will try and get a new fuel filter(maybe thats the problem) that filter hasn't been changed since like 2004 (lol) i bought the car as a shell...got it running in feb or so and never changed that filter...will let you guys know what happens..thanks again later