Middle cylinder drivers side is not firing. Fine when turned off one evening, duff next morning.

I've swapped the coil pack and the plug over, fault stays on same cylinder. and the plug sparks when the engine is running and it's laying on the block

If anyone has any good ideas I'd be glad to hear them. If they involve cleaning sensors etc a pointer to the location would be appreciated. I've managed to locate the PTU (old type) and thats about it.

 

Just off for a pie and a pint (and a moan)

 

Cheers in advance

If you're getting a spark it must be lack of fuel.

Check the connections to the injector and maybe try injector cleaner but if it's totaly blocked then I wouldn't think it would help.

If you are getting a spark then the PTU should be OK.

I had a bad misfire after cleaning various connectors around the engine, traced fault to bad connection on middle drivers side injector, by moving the wire to the injector the misfire came and went, on invesitigation the connector was all green with corrosion, cleaned with electrical cleaner and all was good, cleaned all six connectors as they were all the same, as the voltage is low to the injectors any corrosion ca be a problem.

You should check the compression on that cylinder, if ok it must be faulty injector or connection.

Checking the compression ?. Is that something we can do ourselves (if so how ?) or do we need a mechanic with a special bit of kit to do that ?

You need a compression tester or meter to do this properly.

 

But you should be able to see if it is completely dead by holding something tightly over the plug hole while som1 starts the car.

 

First you must disable the car from running like unplug the fuelpump relay.

back from beer thank you all