right was on the motorway last night

got off on the slip road

driving home, hit boost and the car started missing/hesitating and making a ppuuuurrrrrpppppp sound

i thought wtf parked up opened bonnet everything seemed ok, carried on going but it was the same


got home took out the plugs, the 3rd plug had its tip missing and was fcuked

so woke up today put in new plugs and leads (to be on safe side)

still same problem, so i thought ive changed everything why not change the fuel filter too, but still same problem

done a compression test, 1,2,4 cyl. are coming up with a reading of 10, but 3rd cylinder is coming with a reading of around 8

anyone know what the problem could be

engine sounds still sweet, absolutely no smoke

all feedback shall be appreciated

 

unfortunately sounds like it's time to take the head off - I bet your piston isn't looking particularly happy

 

Ouch

 

think its time for a rebuild m8

 

a 400brake rebuild to kill all u masers

 

someone has told me that the tip of the plug has marked the valve?

anyone think this can be true

 

 

more likely it's the piston - either way it's time for the head to come off

 

but if it was the piston

wouldnt it be smoking badly and idling funny etc

 

not if the oil control ring and piston area either side of said ring is OK

 

the same thing happened to me and that ended in a rebuild

 

Bad news about the car mate, hope its nothing too serious.....


What exactly happend and what damage was there when the head came off for inspection??

Thanks.....

 

That sounds right to me thats why you would be down on compression i bet the top of the piston will be pitted like loads of small dents in it and then the bit of plug tip has got in the valve and marked it or bent it a little when its come down and traped the plug tip,

I think the same happened to my mates car.

Best have head off and have a look TBO.

 

Simalar thing happened to me mae at high speed , took plug out with no tip

Here was the result , smoked badly after it happened , its now a brilliant pen holder

heres what i found



good luck , hope its not as bad as this

 

it will be a melted piston for sure, ame symptoms on mine when I melted one.

 

oooo that looks bad! its gnna cost a bob or 2..... hope ur free with ur poket! lolz

 

same thing happened on my escort cosworth took head to find that the exhaust valve had a piece missing outta it no damage to piston though

take head off and look at valves and have them all check and lapped back while its off

if it hole in piston it'll be obvious enough