89 MK3 Problem - Toyota Nation Forum : Toyota Car and Truck Forums

pgiller · 10-21-2008, 07:33 PM

I recently purchased a 89 mk3. I put a aftermarket fmic and hardpipes on it. The problem is when i go to drive it, it builds boost at first then cuts out and spudders and black smoke comes out of the exaust. Could it be my plugs?

CRE · 10-22-2008, 08:44 PM

Go over all of the intake plumbing. It sounds like a boost leak to me. If the pipes have welded on beads make sure the coupler is sealed well and clamped down securely AFTER the bead. I've seen a few sets of aftermarket IC pipes where the welded on beads were only tacked on in a couple spots and the rest would leak like a sieve if the couplers weren't installed well.

Have you checked for error codes?
http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx

pgiller · 10-24-2008, 07:03 AM

How and where could i check for codes?

***bgrieger*** · 10-24-2008, 08:42 AM

Read the insturctions CRE gave you and you will know all you need to.

pgiller · 10-25-2008, 07:23 PM

HA HA HA HA I found the boost leak. Problem fixed.

90supraturbo · 10-27-2008, 12:17 PM

Where did you find the boost leak?

pgiller · 10-28-2008, 06:01 PM

The pipe closest to the turbo. I fixed it and it runs like a raped ape. ha ha ha. I already out run my first 5.0 stang.

90supraturbo · 10-29-2008, 06:50 AM

Quote:

Originally Posted by pgiller

The pipe closest to the turbo. I fixed it and it runs like a raped ape. ha ha ha. I already out run my first 5.0 stang.

MY I/C pipe that loops from under the fender into the intercooler is dry rotted and i'm having the same problem as you did.Is it possible its leaking thru there?

pgiller · 10-29-2008, 07:14 AM

Possibly, I would get a set of hardpipes. u probably find a set at www.supramania.com in the mk3 for sale section. Or if possible buy a set of diy kit off ebay and make you own custom pipes.

***bgrieger*** · 10-29-2008, 12:50 PM

Why. If you're not increasing power, they don't need to be replaced with anything but good stock ones you can probably find near free from people that upgrade to hardpipes.

Bob

pgiller · 10-30-2008, 07:15 AM

Well i have heard that the factory ic pipes are more prone to cracks and leaks. Plus chrome looks sexy under the hood. :-)

Jeeves · 10-30-2008, 09:30 AM

They are more prone to it. But I know people making > 380hp still using 'em today.

Simply put, if they're bad or leaking replace them. If they're in fine condition, don't.

pgiller · 10-30-2008, 02:24 PM

you are right but my car didnt have any when i bought it so i went ahead and upgraded^

90supraturbo · 11-05-2008, 05:58 AM

I finally found the leak at the same pipe that PGILLER did.It was cracked behind the hose facing the firewall so thats why i couldn't see it.It wasn't till i got pissed and took off all the piping off the car to replace them that i found the leak.Thanks for the info guys.

pgiller · 11-05-2008, 07:13 AM

No prob. How does it run now?