B53 Posted April 20, 2012 Share Posted April 20, 2012 Hi Guys,I pulled my injector pump to fix some oil leaks, and after reinstalling it I can't get the engine started. I re-timed and primed the system per the book. Even tried the timing both ways- to both Nos. 1 & 6 cylinders just to make sure I had it timed correctly. I cracked the high pressure lines at the injectors and cranked a bit to bleed whatever air was in the lines- I do have fuel to the injectors. She fires sometimes when cranking, but never actually starts. Smokes like hell though. Whats wrong?This a 673C engine with PSM (rotary) style pump.Thanks,Kevin Quote Link to comment https://www.bigmacktrucks.com/topic/24602-b53673-wont-run/ Share on other sites More sharing options...
fifth wheel Posted April 20, 2012 Share Posted April 20, 2012 You can be on the flywheel marks but a 1/2 cycle off.FW Quote Link to comment https://www.bigmacktrucks.com/topic/24602-b53673-wont-run/#findComment-115201 Share on other sites More sharing options...
theakerstwo Posted April 20, 2012 Share Posted April 20, 2012 You are still off on timing.I have worked on them years ago when on the 864 V8 engine and can not remenber were the pump timing mark was. But sounds like it was on the rotor head inside of a window lining it to the end of the gap between a snap ring in the housing. This mark should be up when # one cyl is ready to fire. The mark on the flywheel should be lined up with its self when the rear valve cover is removed and rolling the engine over watch for valve over lap on # 6 then 1 is ready to fire.The valve over lap is found when the exhaust closes and the intake just starts to oipen. glenn Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/24602-b53673-wont-run/#findComment-115213 Share on other sites More sharing options...
B53 Posted April 20, 2012 Author Share Posted April 20, 2012 The timing mark on the pump is on when the flywheel is at 28deg BTC. I watched for the valve overlap as stated, and timed it there. When it wouldn't start, just for giggles, I tried it the other way as well- as in turned the crank one rev and back to the timing marks. It smokes and kinda fires the first way, nothing the second way. So I'm pretty sure it's timed to #1 cylinder. Is it possible that the flywheel timing marks are off?Kevin Quote Link to comment https://www.bigmacktrucks.com/topic/24602-b53673-wont-run/#findComment-115308 Share on other sites More sharing options...
B53 Posted April 24, 2012 Author Share Posted April 24, 2012 Anyone have ideas? I'm at a loss here. My next trick is to just start moving the timing 5 degrees at a time till I get something...Kevin Quote Link to comment https://www.bigmacktrucks.com/topic/24602-b53673-wont-run/#findComment-115813 Share on other sites More sharing options...
B53 Posted April 30, 2012 Author Share Posted April 30, 2012 Got it running today. Had to use that mysterious "other" timing mark near the front of the pump.Kevin Quote Link to comment https://www.bigmacktrucks.com/topic/24602-b53673-wont-run/#findComment-116924 Share on other sites More sharing options...
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