Where is your temp sensor mounted? If in airstream - I would expect to see under 200 degrees F. Exhaust Ports may run up to 375 or so, cylinder head temp around 300 or under... mostly educated guesses for this engine. Book specs available if needed - gsj@gci.net

dieselgman

India sourced parts with the L/P packaging - standard procedure now.

On your LPW2, plenty of resources remain in Kansas. These were USA built for the USArmy and USAF MEP802 generating sets (and other applications). Most of these were contracted through Cummins/Onan and bear their Onan nameplates and valve cover castings. ALL built in Olathe Kansas. Diesel Electric continues to supply these parts resources, and continues to rebuild these engines. Governors differ between military and civilian types. Contact me if you need to equip yours. Gary - gsj@gci.net

dieselgman

Does your unit have the correct governor weights installed? Many variations exist... fixed 1500 or 1800 rpm weights will be the heavier ones and usually equipped with 2 governor springs.

dieselgman

Diesel Electric in Lyons KS is the best supplier for all things Lister/Petter. Largest inventory on the continent for certain... includes all legacy L/P products plus their more modern product lines. 100s of engines and multi-million $$ parts inventories.

gsj@gci.net is best contact.

dieselgman

450 psi would be considered fairly "normal" although this is not a spec nor a procedure proferred by Lister for these machines. We sometimes get down to this if we have a balking engine that we cannot get an accurate diagnosis from the usual crankcase vacuum measurement. (i.e. the engine just cannot be started). What you are actually looking for is consistent even compression across all cylinders. 350 psi may be considered enough on one of these very small engines. You cannot test through an injector. Use an adapter made for the purpose.

Injectors should be bench tested for pop pressure, spray pattern, seal and consistency across cylinders. They can be installed inverted onto your engine if you want to confirm fuel pump operation as well, just cannot see as many details when doing it that way.

The leak-off line from top of injector allows the system to be somewhat self-purging of air in the lines. With a new tight perfect injector there may be no fuel bypass at all... with others there may be considerable, but that generally means that there is internal leakage within the injector body. Some CS models actually used a small open container to catch the very slight drip from the injector leak-off. Newer fuel systems route this back into the fuel supply tank or back into the secondary fuel filter as in your SR.

dieselgman

Marine SR2 as far as I can see. We don't often see the old SRs in clockwise rotation in North America. The raised starter motor is an odd modification, first one I have seen done like that.

dieselgman

That connection back to filter only serves to help bleed off air in the event of fuel tank run completely empty and a bunch of air getting into filter. It can be helpful at times, but not necessary.

dieselgman