I think my injection pump is going south. Idles fine when cold, but slows down the warmer it gets. Got to talk to the local Bosch shop.

 

That is definitely the signs of a worn IP. But I would first try a re-seal and see if that helps, cheaper to put a $25 re-seal kit in then to replace the whole IP.

 

Throw some cold water on it and see if the idle comes back up

 

That's what my wife does to me when she catches me look in at another woman.

 

I no longer recommend that after reading about the tolerances being so tight in the IP, and if adding the cold water it could actually seize up the IP.

 

I agree with Thrashing on this being a sketchy problem solving method.

 

You guys need to live life on the edge 😂

 

Yes, water is a horrible injection pump diagnostic tool.

 

Talked to the local (only) Bosch service center in the state yesterday. $750 to overhaul mine which is about average. That includes bench testing, calibrating, bla bla bla. He wants $550 to R&R it.
Never pulled one before so I have the usual questions. Do I need a special gear puller, it is rather tight in there. Do I need to pull everything forward of the engine? I figure removing the injector lines from the engine is a have to. Otherwise they will be in the way. Will it clear the oil pressure sender or will that have to come out? Anything else in the way?

 

Water has been used tens of thousands of times since the 50's. I've seen it used many times, never a problem but I agree it maybe "could" cause a problem.

Anyways what's your better way?

 

What ever you do, don’t cheap out and install an aftermarket seal kit unless you want to do it again down the road. My pump guys say the aftermarket seal kits are the #1 reason they see customers pumps fail. Pay a bit more and buy a Bosch kit and do it right.

 

need the gear puller to pop front gear off ip, and a curved wrench 13mm, i think to remove the three nuts from back of ip, best to spring for right wrench saves lots of frustation. can be done with out removing timing cover. google both, tools are pretty cheap, fleabay i think, has them,, i removed vacume pump saved a ton of time, not necessary but well worth it to me, plus its a good time to change that gasket. it doesnt matter what position engine is in, just line up keyway and its fine, block 4 hours or so for first time .

 

I know the puller I have won't fit between the front cover and radiator, so I was wondering if there was a special one for that. I found 3 you tube videos on how to do it. Looks pretty straight forward. I'll just have to wait until I can get some long term space in the shop. The other tools I have or can find or make. Somewhere I have a timing tool if it didn't get thrown out in the last great purge.

 

Dang $550 to R&R it? Yeah, I'd do them all day long for that.

 

You don't have to have a special puller to remove the gear from the pump shaft. All you need is a small steel plate with a pair of holes in it. The gear itself has a set of metric threaded holes. Install the bolts threw the plate and into the gear, once you have it evenly finger tight turn each bolt an equall amount until the gear pops loose from the shaft. Obviously you need to remove the nut and lock washer before doing this.