Im a little baffled at the moment , Kerry's XSI 's sump oil reeks of petrol, very strong, so first thoughts are that one of the rings are leaking , as it has used maybe 1/4L of oil over the last 6months. so iv done a compression test this evening & the results were as folows
1. 215 psi
2. 220 psi
3. 220 psi
4. 225 psi
All roughly , there or there abouts, now nothing seems seriously wrong there not enough to say a ring has gone??
how would that allow fuel into the sump :S
Overfuelling can allow petrol to pass the the rings and into the oil. Especially on a cold engine when the tolerances are 'worse'.
aahh yeah fair point
yeah it hasnt been grate on fuel recently either
Yeah, as tom says sounds like it's getting a bit of bore wash when it's cold. Could simply be worn sensors, old CTS etc. Not sure how you'd go about checking it though.
Niall is an expert on bore wash
Fuel vapour is always squeezing by the rings a little...one main reason why oil changes are needed...
1/4L over 6months is nothing really, when vauxhall 1.6s burn up to a litre every 2500miles as standard!!
(17-03-2014, 07:56 PM)Martin306 Wrote: [ -> ]Yeah, as tom says sounds like it's getting a bit of bore wash when it's cold. Could simply be worn sensors, old CTS etc. Not sure how you'd go about checking it though.
Niall is an expert on bore wash
You could test the suspected sensors with a multimeter.
Has it done many long trips recently...?
If not then I'd guess at lots of cold starts combined with short run times when it's on cold enrichment, it'll throw petrol into the oil...
Change the oil, take it for a few good runs and see how it is and monitor how it's driving...
it does like 4mile runs usualy then a 1 40mile round trip (20miles then it sits for 4 hours) so yeah this could well be the case
(17-03-2014, 07:56 PM)Martin306 Wrote: [ -> ]Niall is an expert on bore wash
Check Lambda, CTS and give it a good long drive. Do you get any smoke from the exhaust or oil loss at times?
(17-03-2014, 06:42 PM)puglove Wrote: [ -> ]it has used maybe 1/4L of oil over the last 6months.
(18-03-2014, 05:40 PM)Niall Wrote: [ -> ]Do you get any smoke from the exhaust or oil loss at times?
Bit of smoke when it's cold white smoke.when it's warm it's fine
I heard a busted fuel pressure regulator can cause this.