Quote:
Originally Posted by Warren  Thanks to all, everything cleaned up, I now have a missfire,b&&&&ks!
Right hand bank, no air leaks, sprayed carb cleaner all round, that's how I found inlet leak before. I have had a spark plug failure before and suspect another dodgy plug. Got bored today and stuffed it back in the garage.
Was ticking over luverly until it reached operating temp, good oil pressure and sat there ages in the sun whilst I was looking for the cause of the misfire.
Warren |
Do you mean misfire or backfire i.e. not igniting mixture or igniting in exhaust.
If it is the former try pulling off each of the plug leads (with insulated plyers or whatever) and listen for the change in note to isolate which cylinder. A good trick if you find the faulty plug is to hold the cap just away from the plug electrode so that it arcs accross on tickover. The increased temp sometimes cleans a plug.
If it is the latter it could be weak mixture or timing. You can often tell which cylinder it is by holding your hand just above the header. the cylinder that is misfiring will feel cooler if it is bad and if it is a late burn due to late ignition it will feel much hotter and sometimes glow red if really bad.
Mike
Mike