Quote:
Originally Posted by rwd4evr
I picked up a 75 240d 4 speed "project car" for a song. Looked it over, put oil in the injection pump fixed a couple messed up things and put it on the block heater overnight. The primer pump was replaced I think, old one with the car. It doesn't work right. You can pull it up and it springs back in, don't see fuel moving in the clear return line on the last injector(not right I know). Anyway I just cranked it a bit and it started popping and puffing smoke. Took awhile but it finnally fired and ran rough while purging the air out of the lines with some throttle. I let it slow down a little too much and it stalled and I guess backfired or something. Then no popping or smoking. Checked cam and crank timing and they look spot on. Looks like new cam sproket and chain with a master link. I cracked injector 1 line and it looks like it's starting to show fuel at like just above 10° btdc. Maybe as much as 15° Specs say 24° is correct. 40 tooth sproket is 9° per tooth. I'm figuring it jumped a tooth on the pump sproket. Would that make it not run at all though? I feel like something sounds different while cranking but maybe cause no popping. It's hard as **** to turn over, tons of compression. Am I missing something?
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Hard to see but the balancer is on the 0 and T Mark between 10 marks. Cam is dead on the witness mark.   |
If as pictured the Camshaft Gear and front Camshaft Bearing Tower marks were line up the if everything was great the OT mark on the Crank Damper would be lined up with the Pointer (this assumes the Pointer is positioned properly).
If that was so then that part of the timing is correct.
After that what is needed is for you to re-time the Fuel Injection Pump by way of one of the timing methods in the Factory Service Manual.
If that does not work the Fuel Injection Pump needs to be removed and put back in with the timing marks on the front of the Fuel Injection Pump lined up and the timing again checked a per the FSM.
You also have to only rotate the engine in the direction that it would be running it as rotating as the manual claims that rotating it in the wrong direction can push in the Timing Chain Plunger and have it jumping teeth.