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Received a #15 button, installed it, did the flow check and the timing was perfect. Reassembled everything and surprise, surprise, it cranked right right up and has been running great ever since. The .006 inch increase in button thickness from a #13 to a #15 made all the difference. Never would...

Thank you so much. I just ordered a #15 from eBay surplus garage. You have really been great help. I should be good to go now. Thx JR

Thanks for the response Mr Jamawieb, You are such a patient, helpful person teaching me how to install this pump. I did the flow test as you described and I think I got some good info this time. The flow stopped at 1 1/4 TDC marks below PC. Or .200+.050 inches below PC which indicates late...

OK....question: my pump that I'm trying to install has a no. 12 stamped on its flange. If I use a no. 13 button and install it on PC and with a 1/8 rod in the flange hole, it should at least crank up, right? I only have one button.

What is the purpose of the "A" Mark on the flywheel? Thx

Thanks for the response Jamaweib. I did as you said and found A on the flywheel. Is this the flywheel position where I mount the pump? I had thought the cam lobe had to be pointing down 45 degrees when mounting the pump but I was probably wrong. I will try it again. Thanks JR

Thanks for your assistance. I'm trying to understand what you are saying. Injectors leaking diesel fuel into the cylinders while the engine is not running? And the diesel fuel leaking past the piston rings into the crankcase which raises the oil level in the crankcase, which I should notice on...

Mep003a injector pump low pressure problem First with the smoking mep003a, injector pump has never been removed. Think it is ok as far as starting is conserned. For some reason smoke boils out both exhaust when it starts. Like engine oil is entering pump mixing with the diesel. May be a gasket...

These pumps, m50's, are so troublesome. Once they are disassembled, good luck making them work again. Just bought a rebuilt one on eBay for $350, can't make it work no matter what I try. Also, on my other mep003a, someway, engine oil is getting inside the pump and it will start but smokes like...