This whole thing just got even weirder.
Took the glow plugs out, tested each one with jumper cables, they all lit up super hot within seconds, so I put them back in. Fiddled with the relay under the dash, which has been clicking on and off the whole time, seems like a bad connection between the relay and LED dash light, because it flickers on and off if you move the relay. Either way, not essential to the plugs working.
Figured I'd cut out the middle man and just throw a 75amp switch from the parts store between 30 and 87 on the relay socket. Still nothing. Figured I'd get even simpler and ran the switch between the battery and the bus bar and still they did not get hot. Getting 12v, but not getting hot.
I talked to some diesel truck guys that I know (texas is riddled with them
) and they told me, that as long as my compression is good (don't know that it is, but it was running a few months ago) I could just spray some wd-40 in the intake and it would start regardless of the plugs. Tried that for ages still nothing.
The previous owner put two clear lines to the pump. The bottom one is the IN correct? (new to diesels
) That hose has only the occasional bubble when cranking. The return, only bubbles come out when its just stopped cranking.
Can an IP just go bad over night? I'm thinking about putting all new lines from the tank to the filter to the IP, just to eliminate any possible introduction of air.
Thanks for helping out a diesel newbie, I love this car so much and it was a blast when it ran, I can't wait to DD it again