Clogged Cat?? - Page 2

vex · 04-16-2009, 07:08 PM

Quote:

Originally Posted by Rx-7fetish

Class canceled, so i went to tinkering, im pulling 19 psi vacuum at idle and about 7 pounds boost tearing down my driveway. It still floods itself whenever i cut it off though, and it sounds like it has a bad exhaust leak between the turbo and engine, with the fcd and manual boost control, i think it should be pushing more boost but is losing pressure from the exhaust leak. It was running like crap, today i couldnt even get it to stay running, turns out that the hose clamp on the intake at the turbo was lose it was giving the car a funky reading for the afm, the numbers above are after i fixed that. Now i have rough idle, and flooding, its always had the rough idle so thats not a new issue. so the problems are going away as i tinker with you guys help. When i got it, it was so bad the owner flat out told me the engine was blown. That was just a busted heater core hose causing it to lose coolant and overheat. Im thinking the injectors are bad, if i pull the fuse and crank for a while then put it back, it starts.

So does any of that sound right or plausible???

I promise you... You are not pulling 19 PSI in vacuum. you're pulling 19 inHg

Rx-7fetish · 04-16-2009, 07:45 PM

Quote:

Originally Posted by vex

I promise you... You are not pulling 19 PSI in vacuum. you're pulling 19 inHg

Oh lol, well my gauge registered at 19, i just assumed it was psi lol and it got to 7 pounds of boost, also there was a check valve installed in the line that went to the pressure sensor. I cant find that in any diagram so i removed it and it seemed to run a little better

vex · 04-16-2009, 09:43 PM

Quote:

Originally Posted by Rx-7fetish

Oh lol, well my gauge registered at 19, i just assumed it was psi lol and it got to 7 pounds of boost, also there was a check valve installed in the line that went to the pressure sensor. I cant find that in any diagram so i removed it and it seemed to run a little better

Check valve?... Weird. But then again I'm sleepy. haha, goodnight.

Boostmaniac · 04-16-2009, 07:03 PM

flooding on hot starts is a VERY common problem for us.

19 vac and 7 boost is pretty good so far. Check your injectors to make sure some asshat didn't throw in some larger injectors without calibrating anything for them.

Also, does it still lose power at 6k still?

Boostmaniac · 04-19-2009, 06:24 AM

I had a similar leak, turned out to be broken exhaust studs.

Rough idle means what? It is hunting, brapping, to low?

What RPM is your idle? Chances are high that you could benefit from a Rat's Nest removal and replacement of the remaining vacuum lines. Also, does your car still lose power at 6k RPM?

Keep us updated.

Rx-7fetish · 04-19-2009, 07:08 AM

no more power loss that i notice. Its just kinda stunmbles and misses a little thats all. I think its due too the exhaust leaking though. Other than that all i have left its fix the ebrake replace the bumper and bleed the brakes and its done. Oh i completely forgot i have to fix the driver window it goes down but not up

Rx-7fetish · 02-09-2010, 03:28 PM

UPDATE: gaskets are replaced, body is straight, still gotta fix brakes, bolt exhaust on, and make sure all my vac lines are were they are supposed to be, diagrams arent helping much. Had the same acorn problem again, i went straight to it this time, i cant for the life of me figure where this acorn came from

04-16-2009, 07:03 PM	#4
Boostmaniac Rotary Fanatic Join Date: Apr 2008 Posts: 182 Rep Power: 0	flooding on hot starts is a VERY common problem for us. 19 vac and 7 boost is pretty good so far. Check your injectors to make sure some asshat didn't throw in some larger injectors without calibrating anything for them. Also, does it still lose power at 6k still? Last edited by Boostmaniac; 04-16-2009 at 07:05 PM.

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04-19-2009, 06:24 AM	#5
Boostmaniac Rotary Fanatic Join Date: Apr 2008 Posts: 182 Rep Power: 0	I had a similar leak, turned out to be broken exhaust studs. Rough idle means what? It is hunting, brapping, to low? What RPM is your idle? Chances are high that you could benefit from a Rat's Nest removal and replacement of the remaining vacuum lines. Also, does your car still lose power at 6k RPM? Keep us updated.

04-19-2009, 07:08 AM	#6
Rx-7fetish Blue Blur Join Date: Jan 2009 Location: Windsor Posts: 211 Rep Power: 0	no more power loss that i notice. Its just kinda stunmbles and misses a little thats all. I think its due too the exhaust leaking though. Other than that all i have left its fix the ebrake replace the bumper and bleed the brakes and its done. Oh i completely forgot i have to fix the driver window it goes down but not up

02-09-2010, 03:28 PM	#7
Rx-7fetish Blue Blur Join Date: Jan 2009 Location: Windsor Posts: 211 Rep Power: 0	UPDATE: gaskets are replaced, body is straight, still gotta fix brakes, bolt exhaust on, and make sure all my vac lines are were they are supposed to be, diagrams arent helping much. Had the same acorn problem again, i went straight to it this time, i cant for the life of me figure where this acorn came from