C70 t5 running problems

**Brett855tdi** · Monday 4th June 2012, 20:16

ive first listed my problems here, and still need some help

http://www.vpcuk.org/forums/showthre...t=43739&page=2

#26

**Brett855tdi** · Monday 4th June 2012, 21:57

Can Anybody help?

**bubba_1986** · Monday 4th June 2012, 23:28

Sounds like a misfire. Check plugs and ht leads. Then the dizzycap

**Brett855tdi** · Tuesday 5th June 2012, 16:52

Ive checked all the plug leads etc and all seems ok.... the plugs will need doing soon but still in good shape, there was no oil in the plug holes but there was oil sitting in the top of the rocker cover, however i cannot find where it has come from :s

**bubba_1986** · Tuesday 5th June 2012, 20:28

Have you taken each lead and plug out one by one. Have someone hold the ht lead and touch the spark plug on a ground, turn the engine over to see if you def getting a spark ?

**Brett855tdi** · Tuesday 5th June 2012, 20:45

Originally Posted by bubba_1986

Have you taken each lead and plug out one by one. Have someone hold the ht lead and touch the spark plug on a ground, turn the engine over to see if you def getting a spark ?

I did check all the plugs, i was thinking there would b a crack in one... but wasn't, they are all good and also the leads. its does all look a bit old and i shall replace in the future but it looks ok for now
I don't think checking each spark will really help as the problem is very intermittent... doesn't happen on every short drive

**merc85** · Tuesday 5th June 2012, 20:51

Tried the flywheel sensor??

**bubba_1986** · Tuesday 5th June 2012, 21:37

Or crank position sensor, if that is same sensor then fair enough.

**Brett855tdi** · Tuesday 5th June 2012, 22:06

yea they are the same thing, i could give it a go i suppose.
still abit worried about the blue smoke but im still thinking i need to do something with the pcv

**bubba_1986** · Tuesday 5th June 2012, 22:10

How many miles have u done. I read other day the off gets done at 96k. I've got 111k on my 2000 c70. No smoke though, might look into it if doesn't cost much

**Brett855tdi** · Tuesday 5th June 2012, 22:26

im at 156k with this and i dont think its been serviced too well, the internals sounds sweet even on cold..... but im sure the tensioners are noisy, can hear some rattles when reved... sounds like bearings.
I would redo the breathers myself, i was thinking of repiping it with some tube ive got and use a catch tank, as the whole system seems tired and leaky... also it does smoke a little.
i was wondering if anyone had done a similar job before as i was wondering what to do with the fire box (not that ive even looked at it on a volvo before)