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Old 05-06-2012, 10:41 PM   #1426
bboylocob
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Mine does that and I have the same motor. When I asked Phil about it he said that its probl. The start up map. All was good. Wideband was on Target . And that is from two widebands. Comp. Was perfect and all. It only does it at certain times. Like at certain coolent temps. Just never had time to work on it.
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Old 05-06-2012, 10:44 PM   #1427
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Quote:
Originally Posted by bboylocob View Post
Mine does that and I have the same motor. When I asked Phil about it he said that its probl. The start up map. All was good. Wideband was on Target . And that is from two widebands. Comp. Was perfect and all. It only does it at certain times. Like at certain coolent temps. Just never had time to work on it.

Wait, your's does what? Run rich at startup or foul the plugs on one side of the motor?

Again to confirm, my passenger side plugs look perfect and my drivers side look very very black.
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Old 05-06-2012, 10:46 PM   #1428
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I would also like to add that when the motor blew last year I had the injectors tested by witchhunter injector service and all four came back perfect.
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Old 05-06-2012, 11:02 PM   #1429
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Quote:
Originally Posted by dexterous

Wait, your's does what? Run rich at startup or foul the plugs on one side of the motor?

Again to confirm, my passenger side plugs look perfect and my drivers side look very very black.
Runs rich at times during start up. Sorry. Yea I got the point that one side fouls out on urs. Check Ur map for each injectors pulse. Make sure they all match.
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Old 05-06-2012, 11:12 PM   #1430
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Ok, thats what I though.

Yes, I already checked both the injectors and the spark trims just to be sure. I am also going to be checking the grounds tomorrow as Phil says the drivers side coil packs share a common ground.
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Old 05-06-2012, 11:14 PM   #1431
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Quote:
Originally Posted by dexterous
Ok, thats what I though.

Yes, I already checked both the injectors and the spark trims just to be sure. I am also going to be checking the grounds tomorrow as Phil says the drivers side coil packs share a common ground.
Yea they do I forgot about that. Def. Check that.
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Old 05-06-2012, 11:14 PM   #1432
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How well is your engine grounded?
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Old 05-06-2012, 11:21 PM   #1433
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Well it looks like you ancerd that as I was asking
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Old 05-07-2012, 08:56 AM   #1434
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All the stock grounding is in place and I dont have any modifications to any of that. If it were an ignition thing, wouldn't the motor run poorly and have drivability issues?
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Old 05-07-2012, 09:24 AM   #1435
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Dammitt!!! hope it is nothing serious. I am sure you will gt it sorted out. slowgenious, there's a guy on craigslist that sells food grade drums for cheap. UDS is my next project.
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Old 05-07-2012, 09:39 AM   #1436
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Quote:
Originally Posted by dexterous View Post
All the stock grounding is in place and I dont have any modifications to any of that. If it were an ignition thing, wouldn't the motor run poorly and have drivability issues?
it should be having that with your fuelling problem...

is it both plugs each side? i.e left side is lean, right side is rich? i was going to guess that one/two of your injectors might have taken a dump.
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Old 05-07-2012, 09:50 AM   #1437
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Quote:
Originally Posted by dexterous View Post
What could cause something like this? Here's a pict of my passenger side plugs:

Quote:
Originally Posted by dexterous View Post
I a pretty sure that its not a tuning related issue. Here's a list of the ideas running through my mind:

-Pinched fuel return line from the drivers side rail
-Debris stuck in both of those injectors
-Electrical issue causing problems with both of those coil packs
-Some kind of issue with the cams/head/valves on that side
-Timing belt issue
A "Pinched fuel return line from the drivers side rail" would cause that side to run rich not lean! You say your passenger side spark plugs are fouled?

Also, does your Hydra always run in open loop fueling mode? Or does it run closed loop at low loads?

And this is the problem with running split fuel distribution. More points for failure. Having a global fueling problem is much better for the engine than a partial fueling problem.
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Old 05-07-2012, 09:54 AM   #1438
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Thanks Bee, Dude Tom you cant be serious?!!!! I know you had those injectors checked, maybe get them checked again? Maybe flakey coil packs?
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Old 05-07-2012, 10:30 PM   #1439
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Quote:
Originally Posted by slowgenius View Post
Thanks Bee, Dude Tom you cant be serious?!!!! I know you had those injectors checked, maybe get them checked again? Maybe flakey coil packs?
Yes, I did have them fully checked.
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Old 05-07-2012, 10:33 PM   #1440
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Quote:
Originally Posted by MRF582 View Post
A "Pinched fuel return line from the drivers side rail" would cause that side to run rich not lean! You say your passenger side spark plugs are fouled?

Also, does your Hydra always run in open loop fueling mode? Or does it run closed loop at low loads?

And this is the problem with running split fuel distribution. More points for failure. Having a global fueling problem is much better for the engine than a partial fueling problem.

Shek,

You're absolutely correct. I was so pissed when I was writing my post from last night that I got it all wrong. Here are the actual facts:

The passenger side plugs look good

The DRIVERS side plugs look really black

I feel that the drivers side fuel return line could possibly be pinched.
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Old 05-07-2012, 10:38 PM   #1441
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A co-worker showed me this after I told him about my car today. It kind of makes me feel that maybe my issue isn't so bad.

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Old 05-07-2012, 11:57 PM   #1442
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Hey a few of those rods look like they can be reused...lol


I'm sure Ur block is fine. Just do some checking. And findout if its on every start up or certain coolent temps. Also if its happening when u are driving also.
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Old 05-08-2012, 10:58 AM   #1443
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If it were my car, then the first thing that I would do is consult Phil by email.
I would really re-examine your fuel routing. I would send the injectors to RC engineering. I would check the timing belt to make sure the marks line up on the crank and all cam pulleys. I would verify spark in the spark plugs.

Good luck
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Old 05-08-2012, 11:15 AM   #1444
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If it seems not to be super rich on one bank after driving it but it is after idling it could be that those two injectors flow more at that low pulse width. So at idle that bank will idle rich while the other is lean. If so you should be able to swap injectors and see it change cylinders. They're relatively large injectors and when you get that big the low pulse width flow is usually not that great. One of the reasons that ID's are nice is that he matches the injectors based on that low pulse width. I wish all the injector manufacturers did that.
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Old 05-14-2012, 11:17 AM   #1445
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Cam timing or hydra are the most likely culprits.

Couple questions:
Did you use anything adjustable in the cam timing department?
Parallel or series fuel lines?
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Old 05-14-2012, 09:23 PM   #1446
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When you say adjustable are you talking about things like manually adjustable cam gears? If so, no. Everything there is 100% stock. I have parallel fuel lines.
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Old 05-14-2012, 11:40 PM   #1447
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Quote:
Originally Posted by kakarot09
If so you should be able to swap injectors and see it change cylinders.
This. Would help eliminate a lot of possibilities. I would be interested to see the result.
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Old 05-15-2012, 12:45 AM   #1448
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Quote:
Originally Posted by dexterous View Post
When you say adjustable are you talking about things like manually adjustable cam gears? If so, no. Everything there is 100% stock. I have parallel fuel lines.
that or the crawford adjustable timing idlers. I used them before and found them to be more detrimental. I had 20 psi difference in compression from one bank to the other which resulted in one side being more rich than the other.

Try series fuel lines. I realize that this is not likely the cause of your issue, but there is a lot of evidence that support series rails on our cars being better than parallel.
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Old 05-15-2012, 01:10 AM   #1449
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Quote:
Originally Posted by Maxwell Power View Post
Try series fuel lines. I realize that this is not likely the cause of your issue, but there is a lot of evidence that support series rails on our cars being better than parallel.
could you please elaborate?

some of us simple folk could use some info
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Old 05-15-2012, 01:31 AM   #1450
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Have you checked the coils on that side? Check them when they are cold, then heat them up with a heat gun and keep checking. See if they drop. I do think its odd that both on one side are hurting. Did you check the ground that is next to the fuel rails? Is it tight? Is it there? working?

You are also using the correct spark plugs right? Are you checking gaps?

What FPR are you using? What fuel pump are you using? What is the fuel pressure set at?

Have you tried to put a fresh set of plugs in and log the ecu?

You can always move stuff around and see if the problem follows..... But I think at this point its better to get a volt meter out and start checking things. Why risk hurting a good motor.
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