You will *NOT* want to mess with the engine portion of the fuel plumbing to run a diesel heater! Tie in further back closer to the fuel tank. Big trucks do this all the time, the Tee is usually within a short distance of the fuel tanks, sometimes the fitting is even screwed right into the tank pickup fitting (also goes for some Gen-sets).
on my bus the diesel tank included a separate fitting that unscrews where you can install a ssecond fuel pickup .. I installed a second pickup that is a couple inches higher than the factory pickup so my diesel heater cant run my bus out of gas.. my diesel heater has its own fuel pump clear fuel filter so I can check it without taking it out.
Thanks for the help jazty - Any idea which one is feed and which is return in the picture?
I know its a bad idea to tap into the engines fuel line but my fuel tank is 100% inaccessible without dropping the entire thing. There is only a small gap in the frame where I can stick my hand through to reach the level sensor plug and feel the fittings for the lines. Short of drilling into the side of the tank and having someone tig a fitting onto it (which around here is gonna cost a small fortune) I won't be getting my own line anytime soon.
im learning that apparently not all busses have the access hole.. ive heard from a couple people that say the mechanics had to drill an access hole in the floor of their route busses to replace the sender.. maybe it was a spec thing by the school?
Could be optional. Maybe by the time we get our buses the mechanics have already had their way with them!
I relocated the tank on my bus. Cut a new access hole for the new location. Didn't take much to cut a new hole and slap a chunk of steel over it with 4 screws. Now if I need to get to the top of the tank on the road it only takes a screw driver.