Help Any Diesil Engineers Out There?
I have a single cylender diesil crank handle starter dumper truck?
it is lacking power i have very good compression. but every now and again it will stall and then on recranking ithas bearly any compression then at about ten turns the compression kicks in and i then have to turn the decompression leaver to relive it the flick it back and i will start. i think it is a sticky valve dose anyone agree or have any other ideas?????? if it is a sticky valve how do i go about remidying this
Tagged with: Diesil • Engineers • Help • There
Filed under: Back Decompression
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Sounds like you are on the right track possible sticking valve.
Try changing the engine oil but use an engine flush oil first, once you have flushed the engine fill up with new oil and see if it cures the problem. If not you will have to investigate further by removing the cylinder head and checking the valves.
It just may need the valve clearances checked and reset?Take off the valve cover and as you turn the handle you will see the valves going up and down.If they are sticking?the gap between the rocker and the valve will increase.It may just need a good degreaser to remove valve stem build up? hope this helps
Doubt its a valve sticking if a valve sticks it sticks for good.If this is a Lister donkey check that unit injector is ok.If injector pintle sticks air can be blown back through injector nozzle and into cam case body so loosing all compression.Take it apart and check check valve and pintle body for scoring.If it is an exhaust valve sticking you will have to pull the head.
Yes, does sound like it. Unless it’s the decompressor itself sticking.