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Topic: fuel lines (Read 1440 times) previous topic - next topic

Re: fuel lines

Reply #25
Blocking at the tank end and using a MityVac is a good way of telling if air is getting in. Probably not worth the effort unless you suspect the hose.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: fuel lines

Reply #26
Air in a fuel system will show itself real quick in boost and performance. For new diesel owners a dead give away is slow rpm fall immediately  after getting off the fuel. Obviously slow to take fuel and respond in conjunction.
Dub McBride 1996 270

 

Re: fuel lines

Reply #27
May show itself as a smooth idle but looses boost and power going on to the highway or in hills. Starting is worse after sitting overnight. Filter restriction usually starts and idles OK.

Air in the generator is indicated by having to open the "T" handled return valve to get the generator to run right. With the valve open, the fuel pump is able to return the air to the tank. Closed, the fuel pump can't push the air past the overflow/return valve. Not all generators have the hand valve.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)