General Coil pack and engine

[Oratebod]

Hi all,

The other day i was driving along and all of a sudden my car starting making a noise i have never heard before it was like a very high pitched cheeping noise and the engine was ticking and knocking, i checked the oil and it was pretty low so i put some in, the noise stopped but the exhaust sounded like it had a hole in it, the next morning i got underneath the car to find a hole in the exhaust right at the bottom of the engine were the exhaust joins, i fixed this problem and started the car still sounded very rough, so i left it at that and yesterday i called my friend who knows i bit about cars and got him to take a look, and there was oil all over 2 of the coils and 1 of the coils was in bits, just the top bit that screws down and the rest of the thing that should go down to the spark plug was not there, is it worth buying a new coil pack and new spark plug and trying that or it there something major wrong with it??
Any help would be very much appricated

 

[Renegade_8]

Which engine is this? Is it the coil per 1.8 or a 1.6?

 

[Oratebod]

Hi,

The engine is the 2 litre 20 valve

Thanks

 

[Renegade_8]

I guess this is similar to the 1.6 and 1.4 where you have a coil per mounted remote and HT leads to the plugs. The oil will be cooling oil from inside the case. I would see if you can get one from a scrapper, you can measure the coil resistance it should be about 0.5 ohms on the primary (measure on LT connector) and about 20K ohms on the HT (measure from on HT output to another. Key thing is they should all be nearly the same. I dont have 2l numbers here, these are about what you would see on a 1.4 or i.6 coil pack. Well worth trying this a sit sounds like you have had a catastrophic coil failure.

 

[Oratebod]

Hi,

The bottom of the spark plug had fired off and was in the bottom of the engine, managed to get it out changed the spark plug and fitted new coil pack on the one that had blown to bits and now it is running fine

Many thanks for your help

 

[jug]

I guess this is similar to the 1.6 and 1.4 where you have a coil per mounted remote and HT leads to the plugs.

20v has coil per plug arrangement, so no HT leads.

managed to get it out

that is fantastic luck, usually it would wedge between the piston ring and cylinder liner, causing damage and a loss of compression.

 

[Oratebod]

Yeah i know i can't believe my luck i really had thought that it had done serious damage when i took the lid of the top of the engine and saw oil all over 2 of the coil packs and then when i took the coil packs off to see that one was in bits i feared the worst, i didn't have anything on me at the time to un screw the spark plug to see what that looked like, but it's running great again now.

Thanks for all your help