Valve Springs! Great

I cant understand though if it was valve springs, how a restart of the vehicle they would automatically come good and the car would run fine. Im still running standard boost pressure so didnt think they would be an issue. If they are U/S though how can I tell for sure if they have had it??

Ta

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Look given you are running a cooler without an edit, chances are it could be an overboost problem however what you have described is synonomous with failing valve springs.

In basis terms what happens is the springs get tired when hot (after a decent workout) and they cause the valve to stay open causing a fuel flooding effect which rights itself after a while.

Although stock, the better cooler may be allowing extra boost which would explain greater strain on the valve springs.

Bottom line, speak to one of the Tuners already mentioned and get a custom tune as the car will not like running extra boost on the stock tune.

valve springs I would say mate probably induced by the fact you will have some over boosting with a cooler change

Edited 21/07/06 12:39 AM21/07/06 12:39 AM by Xtreme F6

Ok, so does this mean that they are stuffed and need replacement asap or does it mean that until its tuned to suit the cooler better they will continue to get lazy under high load.

I guess I need to know is the car ok to drive?

Thanks guys appreciate the advice

Ok, so does this mean that they are stuffed and need replacement asap or does it mean that until its tuned to suit the cooler better they will continue to get lazy under high load.

I guess I need to know is the car ok to drive?

Thanks guys appreciate the advice

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70 percent of T's have spring issues when boost is increased.

Or a valve spring issue......

tom

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definately valve springs.

mine used to to exactly the same only when the car wasnt all the way to its normal operating temp. I would back off from giving it sh*t and it would shake like sh*t and literally run on 4 cyls.

I said it value springs aswell, but you should really start looking

to getting an edit that should sort out your overboosting problems..

Carlos

id say it would have something to do with teh cooler aswel, I have bugger all mods to my bf and I hit overboost on a freezing cold night, and that's with the stock cooler. Only mod then was centre muffler removed and a 2nd CAI. Aftermarket cooler allowing your car to spool ealier could very well cause a boost spike that the ecu dont like and yeh slight overboost aswell.

mate, I'd say its overboost.. most people think valve springs.. but I don't think the factory ecu would let it boost that much to cause a spring issue. But then again, I'm no expert!

You said it happened in the morning, so obviously its a lot cooler then normal day, coupled with the intercooler I'm guessing it overboosted. Could possibly overboosted to the point of causing a valve spring issue.. I'd get an edit, custom tune and a dyno evaluation before giving it too much more curry!

My car has a rough idle after I give it a bit as well. No wait, that's my missus.

My car has a rough idle after I give it a bit as well. No wait, that's my missus.

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Chooka