It could be low compression due to valve clearances being tight but I cant remember what adjustment system that engine uses. If its shims you can check them by checking the gaps with the piston a TDC on the compression stroke, if they are the old adjustable type better still.

There are a couple of wires connected to the pump, one is cold start advance, don't know what the other does, try connecting them direct to 12 volts and see if that makes a difference, I know it did on my sons P100.

Bucket and shims on these,so you'll need the right valve comressor,the right shim pliers and a selection of shim sizes before you even start,quite some investment.Do a few tests first,take out the injectors and then key on,if you look down the holes you'll see 4 glowing plug tips if alls well.check the cam belt condition/timing,pin it up,if in doubt renew the belt,a worn one will give your symptoms,all this presupposes you've renewed the air and fuel filters?and lastly on the

Edited by hardway on 25/11/2011 at 08:30