What do you guys think happened to this VR6 engine???

Customer and tuner say they just got the car to run then car wouldnt run anymore??? What do you guys think!

 

Piston rings. How's the head look?

 

I take it you didn't do a leak down test?

 

It could be a few difrent things.
1 cracked ring lands
2 bad rings
3 bad valve steem seals
It looks to me that the motor was pumping oil . hve to taken the pistons out yet?
You may find the the ring lands are cracked.

 

No leak down test at all! I think he washed out the rings!

 

vr6 = the worst.

 

Yea when people don't know how to work on them.

 

Corrado's are cool.

And they take a decent amount of NOS.

A few of my buddies had some back in the street racing days spraying 100+ all day long....

 

Pistons look like mine, I washed the rings and burning oil.

 

Who built the motor? Had it been used before this time starting it.

It's not common to have cylinders that are that clean on one side and dirty on the other.

 

car was started by the customer before he brought them to the tuner. The car was on Lugtronic ECU management. He says it was a base map. The person who built the engine was Nate from trickedoutms.com..

 

Even more info is needed...

Did it run fine once the customer initially started it? Rough etc?
Check oil and fuel pressure? Change the oil at all?
This the PnP system or full standalone?
Did it even make it onto the dyno for tuning?

It almost looks like 1/2/3 were not firing at all and just had fuel in there.. looks too clean and would explain the low compression numbers and wet look.

 

is 1 2 3 on the same coil?

 

We just heard the car ran for 3 hours. The tuner said the car was really really rich. I am not sure on the EMS as I was not tuning this car. From what I gather this car ran rich or the coils were not firing in 123. The customer got his car runing and brought it to his tuner and they were not even able to get past 3,000 rpm's with the car on the dyno because it kept breaking up really bad.

 

those 3 cylinders never fired. Check ignition or injectors.

Look at the top of the pistons they have no carbon on them. Also that much fuel going through the engine unburnt probably washed the oil off the cylinder wall. Check pistons, cylinders and rings

 

Taking pistons out tonight!

 

If it's on a stock coilpack those three don't really have anything in common on the ignition side. They are paired 1/6, 2/5 and 3/4 in waste spark.

If I was running this motor in batch fire I would have them 1/2/3 on one channel and 4/5/6 on the other. However, that side wouldn't be wet if one driver wasn't working.

Ran really rich by wideband readings or from raw fuel out the exhaust?

 

Hey guys this is Kevin@Lugtronic.
This is Rob F's car, right?

Give me a call tomorrow and I can help sort it out. If you have and datalogs from the dyno send them into the website.