right im going to do a compression test on my car to see if ive got a bent valve, causing the over fueling, but whats the size of the hole that you screw the spark plugs in to?
99sei said:wont it cause a smell of fuel to come out the exhaust though?
thats what im getting, as the fuel isnt getting burnt.
99sei said:we tried plugs 1 3 and 4 no compression in any
we took the spark plug out, put the compression thing in and fired it up. is that what you do?
it runs, can get good power out of it when on the road. but emissioins are too high and the smell of petrol from the exhaust.
Malin Dixon said:The normal compression test is with all the plugs out. It doesn't matter if the throttle is opened or closed. By having the plugs out, the engine turns over faster, and you flatten the battery less, and air can get in so that you don't need to open the throttle.
I had never heard of the compression test with the engine running before. It could be useful, but even the web page describing the procedure says to do a normal test first.
custard said: