Sudden loss of power.

[Jedidiahwiebe]

Wow! Thanks for the quick reply. Saved me from pulling another wired plug needlessly. Also, in case anyone ever searches for these search terms... and just to be clear: There is NO screen or filter or strainer on the fuel shutoff solenoid on my l300

got it loaded with ATF now. Excited to see if there is any improvement tomorrow.

[Jedidiahwiebe]

ATF didn't loosen anything up, niether did attempting to send air backwards through the pump. Also ran a bunch of highly concentrated 'injector cleaner crap through it. Nor was my turbo wastegate stuck open. In fact i am getting a couple lbs of boost at 2k rpm, so i'm guessing that's not the problem. I also took the muffler off and that wasn't the problem. Only thing I'm thinking of now is to pull the turbo just to be sure that air is not getting blocked somewhere. Although that makes little sense. If there is boost there's air no?

It seems to meter out fuel good for startup. Every single time I start up i can get the rpms up to 2k or even 2.5k. However after a few seconds it bogs down, as if the fuel filter was clogged or something. (just to be really clear this is not it, as I'm running it with fuel intake and return line out of my now empty jug of ATF.

It's idling quite smoothly, and isn't making really any smoke. What is up? Is there a type of pump failure that would have these symptoms? Or am I missing something still that I should check before pulling the pump?

[Growlerbearnz]

This is a mysterious one. It sounds like you're testing the injector pump in a sensible and logical manner (i.e. the way I'd do it ) Things I'd check before removing anything major:

-Timing. If you remove the upper timing belt cover you can see the timing marks on the cam and injector pump sprockets, and the plastic timing marks on the lower cover which point at the crank pulley. They should all line up at the same time: take a look at this thread http://www.delica.ca/forum/viewtopic.php?f=94&t=17654

-Turbo play. Remove the ribbed intake hose going into the turbo, and check that the turbine is easy to turn with your fingers, and doesn't wobble too much (a couple of millimeters is normal). You could also try running it without the intake hose in place- that'll rule out any blockages in the filter case. Just make sure nothing can get sucked into the turbo.

-Rockers. It's a long shot, but while you're in there take the rocker cover off and look for anything that's not right. Valve clearances, rockers not moving when you crank the engine over... the rockers can break, and while it's normally a noisy business, I can imagine a failure that would be quiet.

But I think you're on the right track- it really does sound like an internal failure of the pump. If you end up having to replace the pump make sure you get a decent rebuilt one. A pump rebuild should involve replacement of anything that's worn, all seals, and calibration to factory spec. Any diesel injection shop should be able to do it- our Bosch VE pumps are very common. Check out this thread for a horror story: http://www.delica.ca/forum/viewtopic.ph ... 7&start=15

[Jedidiahwiebe]

Admin: fixed image for future reference.

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[Jedidiahwiebe]

That was not a very good picture. Here is the original: http://imgur.com/UmI2ZMR

I actually did check all those things - aside from running the turbo with the hose off and checking under the rocker cover (a good idea since I put a new head on about a year ago and completely forgot to seat the valves)

But yea, Cracked open the IP with the idea to check the condition of the governor spring complex. Ended up seeing a lotta crud. Veggie oil looking gunge. Pretty sure it was nicely softened up by all the injector cleaner and atf i had been running through - just peeling off and gooping up all over the place. Seeing that I figured might as well try the pump off my parts van. Managed to do it without even removing the lower timing cover or any of the rest of the v-belts!

Runs good now.

I've gotta post this picture in all the veggie forums (will do in the delica.ca veggie forum in the thread I already started over there) would like to figure out what caused this. I've clearly been to sloppy with some aspect of the WVO handling, or not purging long enough... I would like to know so I don't have to repeat this in another 50,000k

Does anybody know where to get one of those handy dandy little stainless gauze screens that are supposed to be under the inflow banjo bolt on the pump? I bet my lines between the filter and the IP are full of crap too now...

[Growlerbearnz]

That is truly gross. No wonder it wasn't running properly. Still, now you get to disassemble, clean, and reassemble an injection pump! Fun!

The new pump smoking: does it smoke only under heavy boost, or most of the time? Most of the time: Try turning the full load adjusting screw (10 in the Bosch diagram, also called the max fuel screw) in a half turn.

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[Jedidiahwiebe]

only under heavy load, Such as uphill, or even a bit of smoke under heavy acceleration. I just assumed my timing was off, but i could try the max fuel screw!

[Growlerbearnz]

Retarded timing can make more smoke, but it tends to happen even at light loads.

[Jedidiahwiebe]

Thank you so much, good to know. It really seems to be more of a heavy load smoke show. But then it does smoke pretty good. I really feel like i did a bad job on the timing, so i kinda want to get one those dealies. But maybe i ought to check the max fuel screw... because that sounds much less expensive.

[Firesong]

If it isn't timed perfect then get that done. We tried to eyeball a timing when the gun we used was acting up. It ran crappy, smoked and hotter than it should have. It was parked immediately till we could do it right. Also check and make sure the air filter is good. Huge difference there too. (The vacuum attachment was messing up for the timing gauge originally)