Search results

Finally made time to finish this project, pandemic threw it on the back burner then spring came and yard work began. Anyway put the MEP002a back together with the new valves (lapped them in) And it fired right up. Replaced intake valve seals so now it runs with no smoke. 1 hour 1000w run and 1...

Thank you. I know I’m doing a half @$$ job but I’m catching helllllllllllllll from the banker (my wife) for this project, but this @$$ is Trying to do the half of the job to the best of my ability.

Picked up a lapping tool and compound. Upon further inspection I decided to replace both intake valves as cylinder 1 had a slight bit of damage, A good lapping would have fixed but There was already a decent groove worn into the valve Due to bad seals creating a tar like substance all over the...

I believe that is what happened there is no room for error as the pistons come right flush to the top of the block so the only clearance is the thickness of the head gasket so if the valves are open too long or not closed properly they will get smashed

My ugly little duckling. Scavenged a China 186 diesel ( knock off of yanmar l100) from a Northern tools silent diesel that stopped making power, During dismantling for my use discovered the cause was shorted out wires in the generator head to the automatic voltage regulator due to chafing. Tore...

I should note that cylinder 1 is also coated in carbon so I’m assuming the rings are probably stuck And based on the carbon have been that way for many hours of running

Upon pressure testing cylinder 1 there was a small exhaust valve leak ( will inspect further) I think will b fixed by laping the valves. But there also was a small amount of air coming into the crank, is this normal?

ray70, I was hoping you would say that. Definitely intended on cleaning up the piston. I believe that a piece or coil from the failed intake heater got in the valve preventing it from fully closing and causing the piston to hit the valve?

Removed the broken valve, seat is still good no visual damage, broken valve is still straight and guide looks good. I can get a nos for $17 shipped

So update got to head off and have a broken intake valve on cylinder 2. one of the pieces found its way into cylinder 1. Had a minor exhaust leak on cylinder one but no signs of severe damages to the valves four cylinder. there is some pitting on the cylinders due to the pieces banging around...

Ray70 thanks for the link on those head gaskets I was unsure if they were actually the right ones but if you have bought them and use them I will trust that they are correct

Yes I have it inspected all the wiring I no signs of shorts in the control cabinet. The sparks were coming out of the end of the generator head I wasn’t able to get the shield off the end of the generator head, to investigate further, without dismantling other stuff. The machine has already been...

Hi all to start with this site is an irreplaceable wealth of knowledge though I am a new member/poster many Google searches have led me to previous threads leading to fixes with problems with various machines. now to the point I’m involved with and MEP802 The problem is 2 to 3 hours into a...

I agree and have concluded the head needs to come off for a proper inspection and hopefully cheep fix, aside from the $100 for the new head gasket. Blocking The intake was to hold pressure in the cylinder to keep the valve held up while I removed keeper and spring to try to attach a drill to...

I was able to get a grip on the valve stem with a 3/8 pneumatic drill with out removing spring and keeper and spin the valve but it was unsuccessful in helping the leak.

Compressor can’t keep up with air leak and she’s not a baby 15 CFM or so at 175 PSI. i’m thinking fabing a plate to put over the intake at the head since I currently have the manifold removed to help keep pressure in the cylinder?

Definitely debris in the valves I rigged up a fitting through the glow plug port removed intake rocker arm in air is free flowing through the cylinder out the intake. Crossing my fingers I don’t have to pull the head off just fired up the air compressor hoping it will hold the valve

Good to know about the exhaust tube. I would it would stand up to heat and pressure just as well as turbo tube. Lucky for me the former owner included the replacement tube as that was as far as he got on the repair b4 realizing a lot of other things needed to b addressed witch is when he figured...

ray70, you connect those dots pretty easily. This is the unit you are referring to. I had to jump at the chance to pick this up cheap money needing lots of love. Good tips on how to go forward I will update once I have investigated. The obstructed valve theory seems to fall in line with the...

Thanks for the perspective I can tend to be too close to see the whole picture, that makes sense I will b checking into that ASAP.