Is it possible for the timing to be off 180 degrees while the motor is pinned at TDC on compression stroke cly 1 and the pump pinned also? It’s a 96 so in theory it should be at 14 degrees BTDC. I had pulled the pump off While the motor was out of the truck to do a tappet cover. When i went to pull it off i pinned the motor and the pump pin wasn’t in line. (Figured it either slipped or the truck was timed previously) So i unpinned the cam pin and turned the motor over until i was able to pin the pump. Pinned the pump, took it off. And put the motor back on TDC. Truck doesn’t want to start. Doesnt even try. I have 40 psi of fuel pressure and fuel going to every injector. She just cranks and smokes. Even have smoke coming out the the intake. I’ve been told if the pump is pinned and the motor is pinned then the pump can not be 180 out. ( Yes i know the timing pins aren’t accurate but it’ll get me close enough to get this thing running. I’m not keeping it at 14 degrees)
Timing 180 degrees off?
- Thread starter Smiranti
- Start date
95cummins5.9
Old man ***** gossiper
Possible it slipped if you didn't clean the tapered shaft and torque to 175 ftlbs.
Pump pin and cam pin are still aligned
95cummins5.9
Old man ***** gossiper
The timing pin in the pump could be bent I suppose.
What stood out is you couldn't align the pins before you removed it. Pull #1 valve cover and rotate the engine till the intake valve fully closes. Even better if you pull the injector and put a wooden rod or something and feel the piston for top travel. Then put the pump on pinned. Not exact but will be close enough to run.
95cummins5.9
Old man ***** gossiper
Number 3 intake valve will be fully open, spring compressed at tdc #1 also is good indicator.
95cummins5.9
Old man ***** gossiper
If he has a dial indicator and a magnetic base he would be in business.
Correct me if I’m wrong. And i hope I am because that would explain everything. TDC on compression stroke for cyl 1 is both intake and exhaust valves on cyl 1 are closed and cly 6 valves should be at overlap point?
Inbred Inline
Bastard child builder
I have seen the governor rotate on the pump cam making the pin in the pump WAY off. Quite possible what you have going on, get number 6 on overlap and pull #1 delivery valve holder off the pump to see the plunger. it should be up at tdc on number one.
Just to keep it at absolute basics roll the engine over till #1 intake starts closing then after that the cam button goes in. That's tdc
Now could installing governor springs have something to do with that? I installed 4ks awhile back
Inbred Inline
Bastard child builder
Doubtful since you didn't have the whole governor assembly removed from the pump cam Mine slipped on a 13mm ag governor pump, most good pump builders key the gov on bigger stuff. haven't seen it happen on a smaller setup but mine was injecting fuel on the exhaust stroke, would run on ether, wet stack like no other and make one heck of a flame thrower. now I always pull a DV and set it off port closure in the pump. then adjust my timing with the adjustable gear.
95cummins5.9
Old man ***** gossiper
It is possible that you lost the woodruff key to the shut off solenoid lever doing gov springs. That would let the lever slip on the shaft and the shaft not rotate to give you enough fuel to start, and just smoke.. also when you have installed springs a idle adjustment may be necessary, so try giving some pedal also.
Yupp mine runs on ether and i did have raw fuel in my 475 exhaust housing but i retimed it again and again and there is no more raw fuel. I’m gonna get a dial gauge on number 1 DV. The pump pins gotta be off then. I didn’t think it could slip like that
I did the gov springs a while ago and the truck ran perfectly fine for years after tho..
95cummins5.9
Old man ***** gossiper
Look up the drop valve method for tdc.
tornado112
New member
Yes and mark the dampner so you can spin 180 and do the rest