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  #1  
Old 11-13-2008, 04:23 AM
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help please injection pump timing for w115 240d 1975

hello i havent gone to school in weeks and me and my dad fell into a gutter last night while lifting the battry to put it to charge thats right for weeks we have been trying to start the car ever since i got a stupid idear of removing the injector pump the car is on the road of course now and things cant get any worst (i hope it wont) here is what i did
set pump to begin of delevery
then set camshaft to tdc after removing injector pump
then turn chank shaft with presure valve out and
watch fuel come out of injector line while slowly pumping hand pump to maintain presure
problem:
the fuel stops at about 180 degrees and again at a little pased tdc please consider and help our car has been on the road for 3 days hoping for a speedy reply
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  #2  
Old 11-13-2008, 10:46 AM
michael cole's Avatar
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the engine timing should be 24 deg btdc when reinstalling the injection pump.the pump itself has marks on the spline that must lineup before you reinstall.
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  #3  
Old 11-13-2008, 11:08 AM
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Dont forget to make sure its 24 degrees btdc on the compression stroke, dont ask how I know
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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"
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  #4  
Old 11-14-2008, 06:38 AM
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Unhappy prob

the problem is i cant get it to 24 degrees because i use a protractor and its inaccurate i saw one of yellit's post's and if i read it correct is it possible to find the 24 degree mark with the drip methord what i need to find out is at what point does the cam have to be at and what point does the pump have to be at begin of delivery ? and another thing what is meant by cam lobes (borth cam lobes should be pointing up )and one last thing
is it possible that the crank shaft pulley is a protractor and has markings on it already becouse i saw this picture and thats sort of what it looked like so does this mean that i could get 24 degrees at crank shaft using the markings becouse i used super glue to glue a protractor on the camshaft nut (sort of stupid)
my camshaft cover is removed so its easy to see tdc ps i dont have a drip tube can i use an injector line please post back as soon as you can as this is my last day to work on the car and i just found out i was suspended from school
thanks
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  #5  
Old 11-14-2008, 10:04 AM
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you need 24 degrees btdc at the crankshaft pulley.could be difficult to see or non existent due to grease and dirt.using a protractor on the camshaft would work but keep in mind the actual reading would be different because the cam makes 2 revolutions i beleive for 1 revolution of the crank
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  #6  
Old 11-15-2008, 02:44 AM
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Lightbulb reeeeeeeealy

ok thanks Michel so on the crank shaft pulley there really are protractor like markings on it ar'nt there so now i only have to get it to 24 degrees btdc does every model have this or only 124 ect mine is a 1975 240D W115
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  #7  
Old 11-16-2008, 12:47 AM
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This is a 2 part picture. The right side of the pic shows the numbers on my Mercedes Crankshaft Damper/Pulley. This will give you some idea where to look. If you need to do some cleaning down there to see the number be careful not to bend the pointer.

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  #8  
Old 11-17-2008, 01:05 AM
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Angry new problem

here it is again i am begining to HATE THIS CAR yester day i got it right the timing found the timing marks and set to 24 degrees before tdc and cam lebe was pointing up yes but when the crank shaft was at tdc the camshaft was a little past the tdc mark is that ok maby becouse the chain streches so any way i did not have a drip tube so i did'nt quite get the drip test right and i cant find a drip tube where i live if i go to a car parts shop and say drip tube they'll be like what is that thanks folks
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  #9  
Old 11-17-2008, 11:23 AM
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IMHO forget the drip tube for now not necessary to get the car running.you can fine tune later.with the basic adjustment 24 deg btdc and the injection pump set and properly installed you should be on your way
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  #10  
Old 11-17-2008, 12:00 PM
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Like Michael said, if you installed the IP at the right place, it should start. Do you have the option of a "tow start"? She should go. Good luck
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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"
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  #11  
Old 11-19-2008, 07:52 AM
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injector pump timing device

i sort of have a new problem i reset the camshaft and crankshaft timing now its accurate but then the fuel which has to stop at 24 degrees before tdc stops at 10 degrees does this mean that my injector pump timing device is off timing a little too advanced ? do i have to remove the vacume pump and jump a few links at the timing device or is it because i haven't set the ip corectly all i did was jump a couple of links off the camshaft
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  #12  
Old 11-20-2008, 06:49 PM
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your best bet is to remove pump, not vacum pump. That gear should NOT be that easy to move on the chain. Your very close in your adjustment, only one tooth off actually I'll bet.

It's a tricky thing to learn especially when you need the car. Once you learn how to time them, it becomes second nature. It doesnt take much to bump or misalign the splines on the pump. Took me a few times my first time, and I was in a warm garage working on a car I didnt need.
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  #13  
Old 11-21-2008, 08:07 AM
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you guys are right! it was off now here is where it gets tricky each time i set the crank shaft to 24 degrees btdc and then set the pump to begin of delivery and put it in and attach drip tube then swivel pump until fuel gets reduced to 1 drop per second while having ip lever to full and do every thing and start the car the thing is hard to start smoking and has a very hard force of smoke coming out (like a low rider sound) to keep the engine running we would have to rev it high and if you try to put it on the first and drive the car stalls and even it you plug the alternator on idle now on the crank shaft pulley markings there is a point saying 0T i tried setting the cam shaft at tdc with that in position then when started it just made a whirring sound like no compression strokes now 180 degrees passed the 0T point when started should it start if the pump is set correctly it was originally a little passed that mark when camshaft is at tdc my question is now i have set the cam shaft 180 degrees passed the 0T mark will it start if i tow start it thanks i had the cam shaft cover out to do this (we towed the car home yesterday )

Last edited by pixelsblack009; 11-21-2008 at 08:13 AM.
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  #14  
Old 11-21-2008, 10:18 AM
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It is very difficult to help you like this; your writing is impeding the diagnostic process.

Write one sentence at a time and finish it with a period.

Seperate each issue.
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  #15  
Old 11-22-2008, 08:35 AM
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Post cam and crank timing

ok its not easy walking in the dark to town at night becouse all day i am working on the car and then hurrying home sorry about the previous post

just forget that existed the problem now is camshaft and crankshaft timing i know its hard for you guys when you'd rather be off doing something better just bear with this for a sec you've all been very patient today i set the crank shaft like this :

1) on the crankshaft pulley the marking the is a point saying 0T i first set the crank shaft at that point and camshaft at the 0T point, then it seemed like there was no compression when we started just a whirring sound like the pistons was just moving and not compressing the diesel

2) then 180 degrees or so passed the 0T mark on the pulley there was a mark it does not say anything just a line i asumed after failing last time with the pully at 0T i woulsd set it at this mark and set the camshaft at tdc mark
so crank shaft at the mark with no letters or numbers just a line (180 degrees or so passed the 0T mark) and cam shaft at tdc mark, now it started but on push start that too with a great difficulty it was smoking too and had low torque if you let go of the accelerator the car would stall so holding the accelerator we got home in the car and the car has insufficient torque to run on the 3rd gear what do i do

i hope tis is more clear so the issue here is the cam and crankshaft timing the injector pump is set ok and i know how to set it now (no doubts) :-) this is how tings are :
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