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Engine Specific Info and Questions => IDI Engine => Topic started by: turbosuzi on September 30, 2007, 10:58:52 am
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I installed the rebuilt pump yesterday and se the timing with my ASE dial to:initial 2.5mm=.098
then 1mm= .093
OEM time .83-.93= .0326-.0366
then timing mod to 1mm=.093
correct?
Then I filled the ipwith fuel and cranked but only fires evry 4-5 revolutions, smokes alot dies, willnot remainrunning. So I retimed and set to OEM timing.034, cranked and the same problem. I thought that it might not have enough fuel in the pump so I craked the injectors and was getting fule at each injector.
The thing that i am supicious about is that the long ipn htat screws into the dial seemed too long and could not get the dial in far enough to tighten the lock screw so I cut about 1/4 in off of the end could this be any problem?
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I think you are way off actually... as I recall the stock setting of 1.00 mm translates into 0.039 inches...
1 inch = 2.54 cm....
If so your timing is super advanced and your engine will not run well at all !
Are you:
1) getting the engine exactly at TDC
2) ensuring the camshaft is perfectly at TDC using the cam lock and feeler gauge shims as required, loosening the cam sprocket if needed
3) rotating the engine backwards (CCW) until the dial gauge stops moving
4) zeroing the gauge while making sure it has a mm or so preload
5) rotating the engine forward (CW) to exactly TDC and then taking the reading ??
Vince
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sorry the 93 was a typo .039 is what was ment. I have and used the cam lock and the ip sprocket lock pin also.
And steps 1-4 were followed.
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sounds like you are out 180 degrees. Depending on your year you may have the timing injection pump off 180 degree. There is a small mark on the inside of the gear. Make sure that is lined up with the mark on the housing. If not take the pin out of the injection pump and move the injection gear 180 degrees.
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do you mean the timing mark that is stamped into the side ip gear? or is there one on the inside of the gear?
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BTW... the possibility that you are 180 degrees out only exists if your pump sprocket has two locking pin holes... if you only have one locking pin hole with a locking pin in it *and* the engine is at TDC *and* the cam slot is aligned with both cam lobes on #1 pointed up you are in the right space.
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the sprocket came from the old ip not the rebuilt one.
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yup sounds like he's 180 degrees out ... set the crank to TDC
then put the locking pin in the IP pulley and make sure your Cam is on CYL #1 ( both valve closed and the cam lobes are UP ) then do your timing of the IP ... and set it to .032" ( depending on which guage you're using)
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I just checked and the lobesare facing up and cam lock plate is in and the IP pully lock is in and crank is at TDC. I dont know what is going on. Maybe I should put the old pump back on and let leak.
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It's a thought... would certainly help narrow down the issue.
Did you rebuild the pump or someone else ??
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No I bought it from a Pete Rothenberger on ebay
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Should I put the old one back on to see if it runs on that pump?
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I installed the rebuilt pump yesterday and se the timing with my ASE dial to:initial 2.5mm=.098
then 1mm= .093
OEM time .83-.93= .0326-.0366
then timing mod to 1mm=.093
correct?
Then I filled the ipwith fuel and cranked but only fires evry 4-5 revolutions, smokes alot dies, willnot remainrunning. So I retimed and set to OEM timing.034, cranked and the same problem. I thought that it might not have enough fuel in the pump so I craked the injectors and was getting fule at each injector.
The thing that i am supicious about is that the long ipn htat screws into the dial seemed too long and could not get the dial in far enough to tighten the lock screw so I cut about 1/4 in off of the end could this be any problem?
Did the diesel pulse coincide with the compression stroke @ #1?
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Did the diesel pulse coincide with the compression stroke @ #1?
How could I check that
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It turns out that the fuel that was in the pump ran out and there was air in the fuel supply line. I purged the air from the line and it started but idled like crap, a little better when i pulled the cold start but would still idle start shaking the rev then back to idle. I thought that it might have been residual air in the pump so I took it for a test run at first it hesitated but then evened out so gave it some fuel and it ran like a bat out of heck. It felt great but then it started overfueling on its own my temp went up and it felt like the throttle was stuck open but the throttle would return but not the rpms so I shut it down. now it will only start but no throttle the cable is connected and the return spring is working What now?? Did I kill the pump
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Did the diesel pulse coincide with the compression stroke @ #1?
How could I check that
Rocker cover off, ignition on, but GP's off Hand crank or brief use of starter to see pulse[dribble] of diesel from loosened fuel line @#1 injector [raise line slightly].It should coincide when cam lobes are pointing up like rabbits ears... :idea:
What do you think that you've done to the pump other than install it to cause any damage??
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I haveent done any tihng to the pump yet. I have no idea what would cause it to feel like it has no throttle.
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It really really is sounding like you got a bum pump from eBay... or have you swapped back to the old pump ??
Lack of throttle can be a couple of things internally... most likely a disconnected/broken governor spring assembly.
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I will be installing the old pump tomorrow and I will let you know what happens.
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OK I resealed the old pump and reinstalled it. It is running but now I have alot of unburned fuel on start up and I have to crank a good 20 sec to get it started. It will intermittenly fire then die then it will start after 4-5 times of this. then it will idle hard until it warms up. It also runs hotter now. I advanced the timing to 1mm could this have anything to do with the hard start? I am going to turn the timing back to see if that helps. I was wondering if maby injectors might clogged from something when I had it open. is there a way of checking them?
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advancing the timing should help with a cold start. it allows the diesel more time to burn, but too advanced, and you could burn up some internal components such as the piston tops (because the burning diesel lingers in there)
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fuel filter is about 1 1/2 yrs old. The diesel is in a suzuki samurai and I dont have a cold start hooked up, which direction should the lever be up or down? I insatlled new glow plugs.
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After it is started and warm it idles fine and I drove it about 30 miles stopped a couple of times. the longest stop was about 4hrs and it stillstarted hard so I dont think there is any air in the lines.
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OK I had the cold start away from the sproket while I did the timing. I will correct that and let you know. I dont have a clear tube feeding the pump but I will put one tomorrow. Thankyou for all of your help.
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It seems that the cold start was the problem but I wont know until tomorrow for sure. Thank you all for all of your excellent help!! :D