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corsav6
26-09-10, 01:04 PM
Hi is there anyone out there that has had running problems on a corsa 2.5 v6...??
It runs fine in the morning when its cold but as soon as it warms up the car runs reali bad ..losing power and not running fast ..the engine is out of a cavalier 1995 redtop...photo's will be added l8a..thanks :)
corsav6
15-10-10, 05:22 PM
changed the coilpack and leads..still running like poo
dougie_boi
18-10-10, 09:13 PM
probably one of the following mass meter knock sensors or crank sensor or could be your coolant temp sensor
DAN-F
18-10-10, 09:42 PM
Rocker covers leaking oil into the plugs???
maddogdaz666
19-10-10, 03:19 PM
Rocker covers leaking oil into the plugs???

either ^ or it sounds like there might be a crack in the head/heads possibly? and as the engine gets warm it opens up and runs pap, my old 318is used to do the same.
Jack
19-10-10, 04:15 PM
Aye, check for oil in the plugs. If so, and its got plastic rocker covers, they've probably warped.

I think mine has a knackered knock sensor and it just runs down on power at any more than half throttle, whether cold or warm.
corsav6
30-10-10, 10:20 AM
Rocker covers leaking oil into the plugs???
ye the back gasket is leeking abit..onto 1 and 3 ..would that cause the problem cheers
corsav6
30-10-10, 10:22 AM
Aye, check for oil in the plugs. If so, and its got plastic rocker covers, they've probably warped.

I think mine has a knackered knock sensor and it just runs down on power at any more than half throttle, whether cold or warm.
ye i heard about them warping..but ill try a few sencors first then ill change the plastic heads
Mazz
30-10-10, 10:41 AM
They do warp, my cav HT leads used to dip with oil the well's were that full! Get some Vectra metal ones.

You can see the amount of sealer on these, and they still leaked!

http://i5.photobucket.com/albums/y191/mrmazz/Cav/DSCN1090Small.jpg
corsav6
03-11-10, 08:35 AM
Aye, check for oil in the plugs. If so, and its got plastic rocker covers, they've probably warped.

I think mine has a knackered knock sensor and it just runs down on power at any more than half throttle, whether cold or warm.
i have the metal ones now..not fitted yet..could htis be causing the running problems tho??
Scooby2
03-11-10, 12:39 PM
cts would be my guess, cheap from vaux too
Harvey
03-11-10, 02:53 PM
I have the exact same issue with my Cally V6. Coil pack, leads, plugs, compression, all good with no oil leaking anywhere. Tried 4 idle regs and all the same sometimes OK sometimes not so bought a new CTS from Vaux yesterday £10.34 (part no. 90510183) and going to try that.
Ben
04-11-10, 01:00 PM
Did the cav's have egr's?
Sloth
04-11-10, 02:15 PM
yip.
AlanH
04-11-10, 07:19 PM
same cts as many other vaux's IIRC, my old xe had one out of a corsa sri when mine failed
corsav6
20-11-10, 10:05 AM
I have the exact same issue with my Cally V6. Coil pack, leads, plugs, compression, all good with no oil leaking anywhere. Tried 4 idle regs and all the same sometimes OK sometimes not so bought a new CTS from Vaux yesterday £10.34 (part no. 90510183) and going to try that.
hi did the cts sort the problem out???
Jack
18-01-11, 08:17 PM
Bumping an old thread I know but meh, its valid.

Fitted now O-rings between the upper and lower inlet and CTS today. Engine now seems Ok; not tested it properly (only took it out for a quick pootle, as its been stood for ~four months) but it doesn't appear to flatten off at higher revs any more.