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Old 11-27-2008, 07:24 PM   #1
hklvette
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Member#: 152546
Join Date: Jun 2007
Default no spark/ excessive fuel after HG change

Hi all,

I'm having a big problem getting my '95 legacy (ej22, 308k miles) running after I pulled the heads off to clean carbon deposits I thought were causing the engine to run poorly. Before I pulled the heads off, the engine would start with some effort and idle decent, but at throttle tip-in it would choke out most of the time. If i brought the revs up very slowly and was lucky, I could get it to spin at 4500rpm before it would choke out no matter what. I figured it might be a sticking valve or excess carbon causing problems. I cleaned the carbon out and reassembled everything, only to have it not run at all. When cranked, it backfires occasionally, and during one instance would run for some time before dying. Its getting a good bit of raw gas in the exhaust. I have replaced the coil and got a pair of ignitors from the junkyard, but still no change. I have checked all of the connections as best I could, but nothing has made a difference. Any help is appreciated.
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Old 11-27-2008, 08:23 PM   #2
ballitch
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Member#: 74907
Join Date: Nov 2004
Chapter/Region: NWIC
Location: salem, OR
Vehicle:
98 cam'd EJ251
Wrx Tranny,slowr than ish

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Are you sure you put the timing belt on correctly? Did you use the dash mark on the crank sprocket, or the triangle mark?



~Josh~
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Old 11-27-2008, 09:41 PM   #3
hklvette
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I lined up the dash on the reluctor wheel with the mark on the block. Also, the marks on both cam sprockets point just slightly inward of vertical. If feels like its getting good compression when I rotate the crank, but I will soon procure a compression gauge to double check. I would think though that I'd still get fire from the fuel-air mix when the plugs light, but it isn't. When it does fire at all, it makes a ton of smoke in the process. IDK if its from overly rich mix in the cylinders or just fuel in the manifold smoldering.

Edit: I guess what I mean to ask is what could cause a no-spark condition with the exception of the igniter and the coil, as I'm pretty sure that's the problem.

Thanks for the help!
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Old 11-28-2008, 09:17 AM   #4
Storm
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Chapter/Region: MWSOC
Location: SAUL'S Motorsports
Vehicle:
96L Most Over-
Developed Beater

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Crank sensor? Do you have any codes?

Jay
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Old 11-28-2008, 02:17 PM   #5
hklvette
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no codes before or after gaskets, the crank and cam sensors coil resistances check out, and the cam sensor does make pulses in the 30mV range as verified by multimeter. haven't checked the crank for pulses yet.
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Old 11-29-2008, 09:46 PM   #6
hklvette
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I think the crank sensor is defective after testing. It pulsed once during two rotations of the crank, which i guess would explain the very intermittent spark. I have a new one coming in the morning, will update after its installed.
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Old 11-30-2008, 01:14 PM   #7
hklvette
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Okay, put a new crank sensor in...no change. Pulled all of the plugs, regapped, made sure all were getting spark...still no change. I'm about at my wits end with this darned car. If there's anything else I can try that doesn't cost anything (tools not included), I'll try it, but I'm about to get rid of it one way or another.
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Old 01-21-2009, 06:29 PM   #8
hklvette
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Been a while since I've poked at the car and have been trying to sell it with no luck, so i kicked at it today. I sprayed some starting fluid in it, and it WILL run, at least until it runs out of fluid. In the next few days I'll see if i can pour some gas in the intake and get it to fire. If so, the problem should be no fuel.
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Old 01-22-2009, 10:06 AM   #9
loccomoffo
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Member#: 200891
Join Date: Jan 2009
Chapter/Region: International
Location: Western Australia
Vehicle:
1995 Impreza EJ18
Shabby White

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If the car runs with solvent sprayed down the intake manifold then its definatelly a fuel delivery problem.

Can you hear the fuel pump building pressure when you turn the ignition on?

While running/starting place the end of a wooden broom handle against each injector, now place your ear anywhere along the handle. Can you hear the injectors opening and closing?

As for the original problem you had with starting and stalling, maybe it was a coolant temprature sensor malfunctioning? I just had this happen on my '95 ej18 Impreza. Car ran badly with hesitation on acceleration as soon as closed loop control kicked in. The funny thing was that the sensor resistance vs temp reading tested ok when the sensor was out of the car and in a pot of hot water. But when tested on the car gave totally off readings when warmed up.

.
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Old 01-22-2009, 11:44 AM   #10
hklvette
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haven't checked the injectors yet, but will do so soon. Fuel pump does sound like its running, but i need to get a fuel pressure gauge and make sure that i am actually getting pressure.
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Old 01-24-2009, 06:59 PM   #11
hklvette
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Well color me stupid...it sure helps to have enough gas in the tank! The car runs again, but I need to burp the coolant. I will work on that tomorrow...I've had enough fun for one day.
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Old 01-24-2009, 07:08 PM   #12
chazly413
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Member#: 151079
Join Date: Jun 2007
Chapter/Region: MAIC
Location: College Park, MD
Vehicle:
2005 2.5RS RBP
too many friction losses

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^Haha, how did you overlook not having enough gas?
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Old 01-25-2009, 10:11 AM   #13
hklvette
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Its pretty easy when the gas gauge doesn't work, and the "get gas" light is unpredictable.

Edit: As an aside, are there any guides on rebuilding scooby transmissions? The shifter on mine has a ton of slop in it that makes it hard to find gears, like some of the centering springs aren't working.
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Old 01-25-2009, 12:53 PM   #14
watchunglava
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Join Date: Jan 2008
Chapter/Region: NESIC
Location: Portland Maine
Vehicle:
2007 ej253n/a 5speed
Red Sox Nation Lifer

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i have completly rebuilt my shifter assembly with all new bushings and linkage , it now feels better than the mazaratti. slop? what slop? there are 4 or 5 bushings to change out , and its not simple . removing the pin from the last link is amazingly fun!!! not
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Old 01-25-2009, 04:00 PM   #15
BlkTS02
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Member#: 50142
Join Date: Dec 2003
Chapter/Region: South East
Location: West TN
Vehicle:
2002 2.5TS
MBP

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Quote:
Originally Posted by watchunglava View Post
i have completly rebuilt my shifter assembly with all new bushings and linkage , it now feels better than the mazaratti. slop? what slop? there are 4 or 5 bushings to change out , and its not simple . removing the pin from the last link is amazingly fun!!! not
Yeah, driving out the double roll pin for the linkage upgrade is fun!!

There are several bushings to replace to eliminate shifter slop and improve feel:
front shifter stay (easy)
rear shifter stay (not so easy)
linkage bushings (or upgraded linkage) (pita)
pivot bushings (super easy)
tranny mount (this one is work)
crossmember bushings (so is this one)

All of the above can be found through Turn In Concepts, most can be found through Kartboy.

If you're going to upgrade / replace the tranny mount, x-member and linkage do it all at the same time. You'll have to drop at least part of the exhaust.
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Old 01-25-2009, 05:24 PM   #16
hklvette
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looked underneath the car to examine some exhaust leaks...the knuckle/ linkage bushings are definitely shot (sizable gaps between the bushing and the linkage). I won't worry about it until I redo the exhaust, as the car is drivable, and right now that's what matters.
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Old 01-27-2009, 06:08 AM   #17
loccomoffo
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Chapter/Region: International
Location: Western Australia
Vehicle:
1995 Impreza EJ18
Shabby White

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Hehehehe, out of fuel If you were near that would be an instant beer penalty

BTW How's the car running now after the carbon clean up?
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Old 01-27-2009, 07:01 PM   #18
hklvette
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Runs like a champ. Buzzes right up to red-line no problem, smooth as a whistle across the rev range. Still need to patch the exhaust until I can completely re-do the whole system. Oxygen sensors will probably need changing, but i'll wait until i get a few tanks of fuel through it before i do that.
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