Idling And Engine Troubles
05-29-2005, 04:48 PM
#1
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Join Date: Oct 2003
Location: Pittsburgh, PA
Posts: 334
I had just finished reinstalling everything in the engine bay this morning and fired it up and now I am having a few problems, first let me explain whY I removed the engine and the changes I have made. Or just skip down to the problems.
Why I pulled it:
-Had a bad oil leak removed and installed/sealed the front cover and oil pan.
-Wanted to port the wastgate
-Removed all emissions equipment (decided when I was rebuilding the block to remove them)
What was changed:
-Cleaned injectors w/new grommets/o-rings etc and new FPD.
-All new gaskets, o-rings, seals on the entire block except for LIM and turbo manifold (did not remove these).
-Silicon hose job w/simplified sequential (removed egr, aws, dt, acv) plus the viton check valves and installed resistors.
-SS MOP lines
-FEED grounded spark plug wires (grounded to the coil tray)
-96+ y and crossover pipes
-Full exhuast
**I installed the stock ecu just to be sure it was running right and to hopefully cross out a potential problem, I have a PFC ready to be installed.
The problems I am having:
The engine has a bobbing/stumling idle upon warm up (at about 1500rpm), may fluctuate 50-100 rpm. The drops down to about 8-900 and stumbles there as well. When fully warmed, after I give it a quick rev, it drops to about 500 or less and stumbles alot and slowly dies. The last two times it was running that low it died itself.
I noticed a pinging/ticking noise from the exhaust, last time I heard that was with my FC and the timing was off. I understand the timing cannot be adjust without a SST, can you rest the timing? I took a timing light to the leading front and I could see the yellow mark on the main pulley at about the 11oclock position, is the yeallow the leading or trailing mark?
I had discounted the battery and stepped on the brakes and waited 10-15mins to reset the ECU and still the same problems, actually it got worst because now it dies.
I also noticed two black single connectors (similar to the ones for the A/C and airpump and oil pressure), one male and one female on the drivers side harness, I assume these get pluged together, what are they for?
If anything else comes to mind about the symptomsI will post it. Thanks!
Why I pulled it:
-Had a bad oil leak removed and installed/sealed the front cover and oil pan.
-Wanted to port the wastgate
-Removed all emissions equipment (decided when I was rebuilding the block to remove them)
What was changed:
-Cleaned injectors w/new grommets/o-rings etc and new FPD.
-All new gaskets, o-rings, seals on the entire block except for LIM and turbo manifold (did not remove these).
-Silicon hose job w/simplified sequential (removed egr, aws, dt, acv) plus the viton check valves and installed resistors.
-SS MOP lines
-FEED grounded spark plug wires (grounded to the coil tray)
-96+ y and crossover pipes
-Full exhuast
**I installed the stock ecu just to be sure it was running right and to hopefully cross out a potential problem, I have a PFC ready to be installed.
The problems I am having:
The engine has a bobbing/stumling idle upon warm up (at about 1500rpm), may fluctuate 50-100 rpm. The drops down to about 8-900 and stumbles there as well. When fully warmed, after I give it a quick rev, it drops to about 500 or less and stumbles alot and slowly dies. The last two times it was running that low it died itself.
I noticed a pinging/ticking noise from the exhaust, last time I heard that was with my FC and the timing was off. I understand the timing cannot be adjust without a SST, can you rest the timing? I took a timing light to the leading front and I could see the yellow mark on the main pulley at about the 11oclock position, is the yeallow the leading or trailing mark?
I had discounted the battery and stepped on the brakes and waited 10-15mins to reset the ECU and still the same problems, actually it got worst because now it dies.
I also noticed two black single connectors (similar to the ones for the A/C and airpump and oil pressure), one male and one female on the drivers side harness, I assume these get pluged together, what are they for?
If anything else comes to mind about the symptomsI will post it. Thanks!
05-30-2005, 10:15 PM
#3
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Thread Starter
Join Date: Oct 2003
Location: Pittsburgh, PA
Posts: 334
Yes brand new spark plugs.
Also the Vaccum is around 12-13 but when reved it goes to about 17-18. I can here the engine miss on warm up, the fuel is from Dec so it is older which maybe part of the problem, but when it is fully warmed it does not miss and the idle stumbles. I am going to try and burn off as much of the fuel as possible and add new fuel and with some premix or mmo to hopefully clean up some of the buildup in the engine.
I had removed the dissasembled the turbos to port the wasgate and now they are smoking, it probably has been ran a total of 20-30 mins and they still smoke. So I am not sure if they are still burning off the oils and such from handlign them. I used new crush washers for the oil/coolant lines and torqued them to about 25-40 ft lbs depending on the size (I could not find torque specs and was going off of feel from when I removed the bolts). I still have yet to determine if it has an oil or coolant smell. Besides it does not leak any fluids under the car.
It could be an exhaust leak, but I would think it would smoke more at startup and less as the metals expand.
I also noticed some smoke out the muffler, but I think it is carbon burn up, because it does nto seem to have an oil or coolant smell.
Also the Vaccum is around 12-13 but when reved it goes to about 17-18. I can here the engine miss on warm up, the fuel is from Dec so it is older which maybe part of the problem, but when it is fully warmed it does not miss and the idle stumbles. I am going to try and burn off as much of the fuel as possible and add new fuel and with some premix or mmo to hopefully clean up some of the buildup in the engine.
I had removed the dissasembled the turbos to port the wasgate and now they are smoking, it probably has been ran a total of 20-30 mins and they still smoke. So I am not sure if they are still burning off the oils and such from handlign them. I used new crush washers for the oil/coolant lines and torqued them to about 25-40 ft lbs depending on the size (I could not find torque specs and was going off of feel from when I removed the bolts). I still have yet to determine if it has an oil or coolant smell. Besides it does not leak any fluids under the car.
It could be an exhaust leak, but I would think it would smoke more at startup and less as the metals expand.
I also noticed some smoke out the muffler, but I think it is carbon burn up, because it does nto seem to have an oil or coolant smell.
05-30-2005, 10:44 PM
#6
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Join Date: Oct 2003
Location: Pittsburgh, PA
Posts: 334
[quote name='vosko' date='May 30 2005, 07:22 PM']hmm.... have you tried driving the car around on the stock ecu to see if it clears up?
[/quote]
No, becasue of it wanting to stall on its own, and I am worried about the smoking (ie possble fire). Although this last time I ran it it did not stall after being reved and turning the heater fan on, but the rpms dropped. And once the fans were turned off it went back up, still stumbling.
I also gotta fix a coolant leak from my upper raditaor hose and fully purge the air out of the cooling system.
[snapback]719195[/snapback]
[/quote]
No, becasue of it wanting to stall on its own, and I am worried about the smoking (ie possble fire). Although this last time I ran it it did not stall after being reved and turning the heater fan on, but the rpms dropped. And once the fans were turned off it went back up, still stumbling.
I also gotta fix a coolant leak from my upper raditaor hose and fully purge the air out of the cooling system.
05-31-2005, 07:19 AM
#9
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Join Date: Oct 2003
Location: Pittsburgh, PA
Posts: 334
I figured there would be a haze coming out, ecpcially since there is alot of build up in the exhuast and engine, but I had a full exhaust on my T2 and did not remember any smoke, although all the exhaust pieces were brand new, Maybe I should have scrubbed down the inside of these.....
I was thinking a vac leak, but so far no luck with that.
I was thinking a vac leak, but so far no luck with that.
05-31-2005, 08:29 PM
#10
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Thread Starter
Join Date: Oct 2003
Location: Pittsburgh, PA
Posts: 334
Well now that I had a chance to start it up under good light, there is a good hint of blue coming out the exhaust 
After about 2mins or so all the smoke stopped.
And the bad idle and dying has somthing to do with when it is fully warmed, the idle drops to about 500 or less and stumbles very bad, then dies. Vaccuum lowers to about 10, other than the typical vac lines they only other problematic item I can thing of is idle control seloniod. Is there a way to check to see if it is functioning properly?
The reall kicker is it idled, ran great before I pulled it to fix the oil leaks, and now it runs like ****!
After about 2mins or so all the smoke stopped. And the bad idle and dying has somthing to do with when it is fully warmed, the idle drops to about 500 or less and stumbles very bad, then dies. Vaccuum lowers to about 10, other than the typical vac lines they only other problematic item I can thing of is idle control seloniod. Is there a way to check to see if it is functioning properly?
The reall kicker is it idled, ran great before I pulled it to fix the oil leaks, and now it runs like ****!