Quote:
Originally Posted by P.E.Haiges
Is there any way U can measure the fuel pressure in the IP? It can be measured anyplace between the fuel pump and the IP
The fuel pump (its not a lift pump like a carbureated engine has) should create enough pressure to open the relief valve on the IP.
I don't know what the ideal pressure should be but someone else might. The IP relief valve could be another reason for not enough fuel pressure in the IP.
There has to be some pressure in the IP to push the fuel into the barrels of the IP.
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He could also now feed in diesel before the lift pump and make sure there is output at the relief valve. If the overflow is there during the test. Plus the engine becomes unable to run it is a good verification .
The problem is all the fifty/fifty product in the fuel filter would have to be more or less hand pump displaced or it will be quite awhile till the injection pump sees the diesel fuel.