Bast*rd Injector Pump

Have just spent 4 hours trying to get the injector pump to move and failed. Now extremly bad tempered and covered in oil (the oil is a different matter!).

Have read the threads on here relating to smoking diesels and about adjusting timing etc. I believe the smoke from The Heap is caused by incorrect timing and have had this confirmed. So, this morning i wandered out into the inlaws garage and set about adjusting the injector pump.

After lots of totally foul language, skinned fingers, etc, etc, etc i don't appear to have budged the flipping thing a millimeter, but do seem to have a hell of a lot more smoke than before!!!!!!

The pump literally will not move, even with the injectors losoened.

What am i doing wrong? Is there a special technique involving big hammers that i should be employing? Or, should this thing move pretty freely once the screws have been loosened?

hi
apologies beeboy if you have done this already
according to haynes you need to loosen the 3 nuts (screws?) on the flange studs and also disconnect the injector pipes from the pump looks like it should move then if not it might have seized a bit on the mating faces then you need tothink about your special techniques!

HI Steve,

yep, did the three nuts and loosened the injector pipes (small diesel spill when one wasn't tighten enough afterwards).

I think you are right about it being seized. Any ideas about the best way to get it moving?

Doesn't look like there is a place to administer a hearty blow without breaking some delicate looking pipe work and other odds and sods.

A tadge frustrated as i took the day off work to get this sorted. All part of the joys of series ownership i suppose.

i think small taps are the order of the day rather than hearty wallops although youlll be forgiven for wanting to bash it senseless, firstly let some paraffin/wd40 soak overnight near the studs hopefully loosen seal, then i would go for a bit of 2x 1 timber and hit it towards the top for most leverage keeping away from pipes and from different directions, there is also a heavy looking boss facing the head about half way up by disconnectoing the breather pipe you can lever between head and boss and witha bit of force on lever some more taps on pump body need another pair of hands

Make sure you have stamped a good line across the pump mating flange so you can see exactly how much it has moved.

Are we quite sure we have loosened the 4 injection pipes AT THEIR PUMP ENDS?

Just slacking them at the injectors won't do it.

Then there is that little bracket at the back, the one with the long bolt ... needs loosened too.

Undo the three injection pump flange nuts JUST enough so the washers (there are washers, right?) under them can move a bit.

Now thump the pump a bit with a mallet, and waggle it about and lever it and curse and swear, and it will give in eventually.

CharlesY

Thanks for that gentlemen.

Having slept on it and soothed the knuckles under a bag of frozen peas, i'm a bit more inclined to try again rather than just set fire to it.

I'll go the whole hog and completely disconnect the injectors pipes and then just tap away. See what happens and hopefully be able to drive down the road without choking pedestrians as i pass by.

While I'm at it should i take a look at the injectors to see if they're in full working order? Read some threads here that suggest the smoke may also be down to faulty injectors.

I usually put a pickaxe handle between pump and engine and use it as a lever. Eventually it moves but be careful which bit of pump you lever against. I have been known to upset the top of the pump which is not good. Best if you can lever against the pump flange. Be lucky.

Well Folks, all went as planned - thanks a million for the advice.

Got all brave and went for the kill - couldn't find a pick axe handle so used a huge mallet - only took 20 minutes and the job was oxo. Felt so elated that the thing went without a hitch that i walked away from doing the other jobs on the long list while i was still ahead.

There is, however, a bit of a missfire. Do i throw some injector cleaner into the diesel and see if that helps or is it a case of taking out the injectors and having a nosey - assuming the misfire is injector related?

I've said this before on other threads and I'm not spemming but I have found tha the best diesel additive that makes a difference is Millers. Works on my engines!

Right Cabbie - I'll give it a try - cheers.

In all your enthusiasm with the mallet, and noting you said you took the injector pipes off thus exposing pipes and union ends to filth and dirt, pray that bits of grot haven't reached into an injector.

Injectors are easy to strip and clean and re-assemble, but you will need access to a pressure tester (Hartridge or similar) when you put them back together.

I have one here.

CharlesY

Thanks for that Charles.

I was most careful with the stuff i removed - thats not to say summit didn't find its way into where it shouldn't be!!!! I'll have a poke around at the weekend and see what i find.

BeeBoy said:

Thanks for that Charles.

I was most careful with the stuff i removed - thats not to say summit didn't find its way into where it shouldn't be!!!! I'll have a poke around at the weekend and see what i find.

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Co. Westmeath huh?

I bet there are garages in Westmeath that still have their injector testers, maybe truck workshops, tractor places, whatever. You want access to one of those testers, or even better you want one!

I use mine quite a lot. Engine do run well if the injectors are set properly.

You can also actually see the injection pattern - the spray of fuel.

(take care not to inject spray through your skin, or to breath oil mist).

CharlesY

You can test injectors by taking them out then re connecting them upside down one by one then turn the engine over and se if you are getting a decent spray pattern or a jet or even just a dribble. Not as good as a proper test but gives a rough idea of whats happening with them.

Hi, I am having long primary pipe custom exhaust manifold made for the Wren so before proceeding I put her on a rolling road so that I could compare the before/after difference. Imaging my surprise when we discovered the throttle setting had been set to 3,150 max revs!!!!!! What fool would restrict a 2,286 LR Diesel To get to the subject off this topic, there was what appeared to be a missfire between 2,000 and 2,600rpm, a mechanic has said that he thinks this could well be due to a faulty injector pump, so it looks like I will have to have it off (My injector pump I mean ). So, thanks to all the contributors to this thread I will remember this when I get round to it. The only prob I have is whether to have a spare pump in my store reconditioned (£200+) or just swap it as is? It appeared to be fine on the engine I took it off.