Quote:
Originally Posted by Andrew Rowe
Also another little trick I have observed, is that if you have the return line from the injectors returning to the fuel tank right next to the intake line coming from
fuel tank , you will get air and bubbles sucked into the intake line and then onto the injectors , and it will sound like it is running on 5 cylinders and you think there is an injector problem when there is not. So these two pipes need to be apart in the fuel tank , and also make sure the fuel tank is at least 1/4 full. It is very surprising how much fuel returns to the tank via the 2mm restrictor and then into your normal fuel line, it is like a garden hose full on ! Cheers Andrew.
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Andrew, yes, I noticed that when test running this engine on the stand. We have a clear return line and saw bubbles occasionally. So we ran with separate supply and return jerry cans.
The tanks fuel tanks are well designed that way. Return comes in at the top of the top tank and has a long path to deaerate before it reaches the pickup at the bottom of the lower tank.
Malcolm