I need some advice on a Petter PH2 engine (electric start) that powers my old Benford 2 ton 4x4 dumper.
Currently it suffers a lack of power and has a suspicious weep of engine oil coming from an area at the bottom of Cylinder 2 (furthest from flywheel). Most noticeable when warm. Not sure whether the two are related.
I have had it 7-8 years. Only used it to build my bungalow past years so not overworked. When purchased it had enough power to take a 2 ton load and drive in 2nd gear along a level tarmac road. Now it can only manage a half load in 1st gear on same stretch.
It went through poor starting 18 months back and got its injectors cleaned and the fuel pumps and feeds rebuilt and assembled as to the manual.
It now starts without issue and sounds as though both cylinders are functional, it revs but lacks power.
The oil weep has been around a time and I did think it was caused by crankcase pressure (worn pistons etc) so fitted some breather to the rocker covers but this hasn’t stopped the weep. Can’t say for sure where the oil is coming from but seems to appear from bottom of cylinder two and sit on crankcase area. It could even be a blown lower cylinder gasket.
Attach a picture which shows area.To date I have not taken anything major apart but ask the following about these engines.
How can you tell that both cylinders are firing or giving power.
Can you take one cylinder off without disturbing the other.
Anyone have experience of similar issues with these old engines.
Regards GHDirect
I am sure there will be plenty of good advice for you from different members on here, although I am not familiar with these engines, my advice is to start with the simple things first, so check that the engine is getting a good clean air supply, check that there is not any flexi hose on the inlet side that could collapse internally cutting off the air supply, check there is a good clean fuel feed, fit a separate temporary fuel tank if you have one, and use a gravity feed.