Posted by guido on March 07, 2015 at 13:22:55 from (72.82.170.252):
In Reply to: 4-71 DETROIT Engine posted by lenray on March 07, 2015 at 09:08:48:
Hello lenray,
If you suspect that the fuel is draining back, a simple one way check valve will fix that. The check vale would be places between the fuel pump feed line and the tank. Cheap way to start the trouble shooting. Another easy thing to try, is adjusting the exhaust valves and the injectors. Late injection timing could be another reason it is not staring. Fuel pump pressure is another thing you can look at. Normal pressure is between 30 to 65 P.S.I.@1200 R.P M.'s. Is the air filter clean?
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