WTF .. Running Rich As HECK.. - TriStateTuners.com :: Home of Tristate Auto Enthusiast

PAFirefighter11 · 08-12-2009, 09:12 PM

1987 Chrysler Conquest TSi 2.6L turbo. New motor, etc., etc. Current issue is that it's running incredibly rich. It's blowing near pure fuel out of the tailpipe.. lots of it at that. I fouled one set of plugs already. Put a new set in, ran very mildly better, but still pouring fuel out. When moving it's pretty much okay, except for some hesitation. When in the lower gears and at idle it seems to be running on 2, 3 and 4 cylinders at times. All 4 plug wires are good. Distributor is firing. Timing is good.

Any idea's? Thanks!

4DR_DB7 · 08-12-2009, 09:45 PM

lol, i just had an amusing image of gasoline pouring out of a tailpipe. New motor? thats weird. Fuel system (pressure regulator?) maybe, idk at all. GL though. and take a vid of that fuel blowing out the exhaust. :D

PAFirefighter11 · 08-12-2009, 10:23 PM

I can't find my little digicam that does video... I think I left it at the notary when I transferred the title and tags on Sat... dammit.

I will get some vid though... it's bad lol.

enigma · 08-12-2009, 10:42 PM

Don't run it too much, you can wash the cylinder walls of oil, and kill the motor.
What type of fuel injection is on that, multi port or throttle body?
Were all the plugs fouled, or just one?
I'd check the fuel pressure first.

1_2befast · 08-12-2009, 10:53 PM

So it is just rich at idle? I would guess either the Maf or bad injectors. I am not too familiar with Conquests, but if it were a DSM they would be the first two things I would check.

PAFirefighter11 · 08-12-2009, 11:10 PM

It's a dual injector setup at the throttle body. Vacuum controlled... This is making me think a vacuum leak is causing the issue. All 4 plugs were fouled and smelled like old gas.. turpentine-ish. There is new 93 in there, but maybe a little residual 93 from a year ago.

It's rich at idle and startup. It's rich for the first maybe 1-2 mins of driving, then no more fuel out the tailpipe and it starts to run a little better, but still not well.

Still leaning towards vacuum.

**Got Insulin?** · 08-12-2009, 11:54 PM

Boost/Vac leak.

R22B · 08-12-2009, 11:56 PM

I think the real question here is can you shoot fireballs? ;)

PAFirefighter11 · 08-13-2009, 12:48 AM

Boost should be okay.. BOV is working great...? Hmm

**TROLL** · 08-13-2009, 01:32 AM

If you had a leak at idle wouldn't it be running lean?

PAFirefighter11 · 08-13-2009, 09:12 AM

I dunno man. I haven't seen this many damn vacuum lines in a long time. Oldest car I've owned in prob 8 years

My memory of vacuum issues is slowly returning.. and it's a scary set of memories!

PAFirefighter11 · 08-13-2009, 09:55 AM

Wanted to add: The car has an aftermarket BOV with only a small vacuum line running from it on the end. Some [Honda turbo] friends are telling me that this is incorrect, as it needs to recycle air from past the MAF with a larger tube? Something to that regard...

full-cruise · 08-13-2009, 12:37 PM

i agrea with 1_2befast, sounds like a leaking injector. did you have them cleaned when you did the rebuild? the bov wouldnt play any parts with this it only releases when the tb shuts. what are you running for fuel pressure? are you running a stock ecu?

PAFirefighter11 · 08-13-2009, 02:03 PM

Hmm, injectors were not cleaned from what I am aware of. Supposedly this is supposed to be a sealed system like this:

Which it's not.. mine looks like this (pardon the crappy camera phone shot at night):

Stock ECU and no idea on the fuel pressure, but it's supposed to be at stock.

full-cruise · 08-15-2009, 10:15 AM

well a easy way to find a vac leak is with starting fluid or brake cleaner.. start the car and spray around the intake, vacume lines, the injectors.. if the car stumbles then there a leak but i would send the injectors out and have them cleaned its cheap and something i like to do with older setups. sometimes they lockup from sitting open during rebuilds.

OMGz Turbo · 08-17-2009, 12:02 PM

Quote:

Originally Posted by PAFirefighter11

Hmm, injectors were not cleaned from what I am aware of. Supposedly this is supposed to be a sealed system like this:

Which it's not.. mine looks like this (pardon the crappy camera phone shot at night):

Stock ECU and no idea on the fuel pressure, but it's supposed to be at stock.

What you just have shown is a recirculated setup, which your right. Your's is not. I dont know much about these, but VW's and some subie's prefer recirc. Not too sure about these

08-12-2009, 10:42 PM	#4
enigma Tri-State Addict Join Date: Oct 2006 Location: Glenolden ,PA Member #2659 My Ride: Hoopties galore iTrader: (0)	Don't run it too much, you can wash the cylinder walls of oil, and kill the motor. What type of fuel injection is on that, multi port or throttle body? Were all the plugs fouled, or just one? I'd check the fuel pressure first. __________________ 2001 Dakota Quad Cab, 1996 Ford F250, 1993 Honda Civic, 1991 Eagle Talon, 1970 Plymouth Duster.

08-12-2009, 11:54 PM	#7
Got Insulin? Hard Snarker Super Moderator Join Date: Apr 2008 Location: Philly Member #7591 My Ride: 01 Audi TT 225, GVR-4 #72/1000, 91 TSi AWD iTrader: (16)	Boost/Vac leak. __________________ -Taylor DenOfDebauchery Last edited by Got Insulin?; 08-13-2009 at 12:08 AM.

08-12-2009, 11:56 PM	#8
R22B Tri-State Post Whore Join Date: Sep 2007 Location: Allentown, PA Member #5854 My Ride: 88 Merkur XR4Ti \| 92 Mazda MX3 \| 98 Ford Explorer Eddie Bauer \| 91 Ford Ranger89 \| 89 Yamaha FZR600 iTrader: (0)	I think the real question here is can you shoot fireballs? ;) __________________ Half the wheels, twice the fun. That's motorcycles.

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08-12-2009, 09:45 PM	#2
4DR_DB7 Tri-State Addict Banned Join Date: May 2009 Location: Outside Philly, on the good side Member #13599 My Ride: 97 Acura Teg iTrader: (0)	lol, i just had an amusing image of gasoline pouring out of a tailpipe. New motor? thats weird. Fuel system (pressure regulator?) maybe, idk at all. GL though. and take a vid of that fuel blowing out the exhaust. :D

08-12-2009, 10:53 PM	#5
1_2befast Tri-State Training Wheels Join Date: Oct 2008 Location: Browns Mills, NJ Member #9949 My Ride: 1992 Talon AWD iTrader: (4)	So it is just rich at idle? I would guess either the Maf or bad injectors. I am not too familiar with Conquests, but if it were a DSM they would be the first two things I would check.

08-13-2009, 12:37 PM	#13
full-cruise Tri-State Aficionado Join Date: Aug 2009 Location: L-town Member #14393 My Ride: 1.3 liter piston eater iTrader: (0)	i agrea with 1_2befast, sounds like a leaking injector. did you have them cleaned when you did the rebuild? the bov wouldnt play any parts with this it only releases when the tb shuts. what are you running for fuel pressure? are you running a stock ecu?

08-15-2009, 10:15 AM	#15
full-cruise Tri-State Aficionado Join Date: Aug 2009 Location: L-town Member #14393 My Ride: 1.3 liter piston eater iTrader: (0)	well a easy way to find a vac leak is with starting fluid or brake cleaner.. start the car and spray around the intake, vacume lines, the injectors.. if the car stumbles then there a leak but i would send the injectors out and have them cleaned its cheap and something i like to do with older setups. sometimes they lockup from sitting open during rebuilds.