Wirlybird Posted January 21 Author Share Posted January 21 12 hours ago, JoeH said: Not sure what the E6901 is. Is this an E6 engine? Or an endt675/6 engine? The ENDT engines use plastic fuel return leak off lines that jump from injector to injector and then run back down to the injection pump/fuel return I believe. These lines get brittle and crack eventually, and 99 times out of 100 I'd bet this is the cause for draining off fuel when sitting. Easy enough to buy a coil of this stuff from your Mack dealer and replace any that are damp. My friend said the E6901 was the engine. It is on a plaque on the hood. Quote Link to comment https://www.bigmacktrucks.com/topic/73746-1980-steel-nose-e6901-mack-starter-removal-help/page/2/#findComment-545403 Share on other sites More sharing options...
JoeH Posted January 21 Share Posted January 21 Never heard of the 901 part of it. Quote Link to comment https://www.bigmacktrucks.com/topic/73746-1980-steel-nose-e6901-mack-starter-removal-help/page/2/#findComment-545407 Share on other sites More sharing options...
Wirlybird Posted January 21 Author Share Posted January 21 46 minutes ago, JoeH said: Never heard of the 901 part of it. I'll have to ask my friend about it. I'll look for those plastic lines, when it warms up a bit, but I don't recall seeing them. Quote Link to comment https://www.bigmacktrucks.com/topic/73746-1980-steel-nose-e6901-mack-starter-removal-help/page/2/#findComment-545410 Share on other sites More sharing options...
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