Hi all,

Recently had problems with juddering issues on my 306. Anyway everything seemed fine (as afore mentioned in another post - no HGF symptoms).

I replaced the Coil Pack which through process of ilimination and suggestions was the issue and all seems fine now - however there is a Slight judder when going just over the 1000rpm point but nothing like before when it was only running on 3. No engine management light since replacement either.

I have also put some injector cleaner in and replaced the rocker cover gasket as it was perishing.

It would appear there is a small leak from either corner of the block - Head gasket? Nothing major just a damp oil run down either side of the block, no puddle on the floor and does not seem to be loosing oil. I am not overheating, no smoke, no sludge under oil filler cap, no oil in the water / header tank. It has done 64k. Is it likely that the gasket is on its way out? Or maybe some other issue? What's your opinion?

Any help appreciated.

Cheers

Nick



[Edited on 1/2/13 by Nickctp]

I'm not having any b*oddy luck with anything at the moment - The car is worth under 1k but not in a position to buy another at mo - so just need it running for another 12 months. If it's HGF - Is it even worth doing?

Did you pull out the plugs and recap when you changed the coil pack?

quote:

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Originally posted by mark chandler
Did you pull out the plugs and recap when you changed the coil pack?

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Worn plugs with large gaps kill coil packs, you should as a minimum pull them out and re-gap. Unless you know the owner and can be sure he had them changed I would not trust him just saying so.

Most engines when a few years old have traces of grime and oil down the block, it's not a reason to be alarmed if the compression is good.

If the car was juddering a lot beforehand you may have stuffed an engine mount, I had a range rover once that had a nasty vibration at 2000rpm, the flex plate mounting holes for the torque converter had elongated which was a cheap fix after I exhausted lots of other things expensively

Best thing is to make sure everything is adjusted correctly in the first instance, plug gaps, sensor gaps etc and see if it improves.

[Edited on 1/2/13 by mark chandler]

[Edited on 1/2/13 by mark chandler]

Oil seepage from the head gasket to the outside world is no reason to lift the head unless it is bad and making a real mess.

The tops of the plugs often get erroded and corroded the coil pack has failled also the outside surface plug insulator can get carbonised if a spark has been flashing over.
The other thing to check is the spark plug gap.

Have you got petrol in your oil from Borewash, this will cause a missfire and also slight seepage of what looks like oil from the head. But it is a petrol soot mix.

Recently had this myself caused by a faulty fuel injector.

Take filler cap off and have a sniff if there a Strong wiff of petrol its in the oil - replace oil immediately and give it a good thrash to break down any varnish inside.

Just a Thought