Please help I am stranded - Page 2 - PeachParts Mercedes-Benz Forum

husk · #1 08-31-2009, 11:42 PM

did you de-water your VO? My guess is your IP is about to fail

I have noticed lately a lot of these problem posts are related to people running WVO

EDIT-Perhaps we should have a subforum for WVO related problems, as the troubleshooting for an engine run on diesel as opposed to WVO is quite different.

kerry · #2 08-31-2009, 11:58 PM

Quote:

Originally Posted by husk

did you de-water your VO? My guess is your IP is about to fail
I have noticed lately a lot of these problem posts are related to people running WVO

X2. That's why I decided my troubleshooting tips were inapplicable. Too many stories of people using WVO running into no-start conditions when their IP is failing. I have no idea how a person would test to see if their IP was on the brink from running WVO. I seem to recall some comments about the viscosity of the fuel when cold overcoming the poor performance of the IP and warm thin fuel pushing the IP over the brink.

GregoryV022 · #3 09-01-2009, 12:00 AM

Quote:

Originally Posted by kerry

X2. That's why I decided my troubleshooting tips were inapplicable. Too many stories of people using WVO running into no-start conditions when their IP is failing. I have no idea how a person would test to see if their IP was on the brink from running WVO. I seem to recall some comments about the viscosity of the fuel when cold overcoming the poor performance of the IP and warm thin fuel pushing the IP over the brink.

that would make sense considering how the pump operates.

diesel #2 all the way

sometimes one if its really cold

husk · #4 09-01-2009, 12:07 AM

Quote:

Originally Posted by kerry

X2. That's why I decided my troubleshooting tips were inapplicable. Too many stories of people using WVO running into no-start conditions when their IP is failing. I have no idea how a person would test to see if their IP was on the brink from running WVO. I seem to recall some comments about the viscosity of the fuel when cold overcoming the poor performance of the IP and warm thin fuel pushing the IP over the brink.

My guess is either water got into the pump or the seals are gummed up with WVO residue. This could cause intermettent problems as the OP has described. I cannot see how letting viscous VO sit in the crevices of the IP can not be blamed for at least part of this problem. It would be useful to see if the OP uses some sort of blend or just pours a bunch of waste oil into the tank. Either way there are several key pieces of information missing to make an educated postulate about what exactly is going on here.

babyjames · #5 09-01-2009, 12:12 AM

Try removing the cap next time this happens. Or just try removing it when you shut the car off. If you hear an inrush of air, well, the vent is probably clogged.

Does this only happen when the tank is full? Worse when full? empty? The problem is almost certainly fuel related. Maybe when something gets warm under the hood, it loses its seal and allows air to enter the system. The car runs fine until the point when you turn it off and then it will not restart???

Jay.

lupin..the..3rd · #6 09-01-2009, 12:35 AM

Quote:

Originally Posted by pawoSD

I can only wonder what that WVO is doing to the poor engine.

I'll bet if you were running diesel, like is intended....you'd not be having any of these issues.

x2. This is a diesel engine. Not a garbage disposal. Stop using that garbage fuel, that's the first and foremost problem I see here. So many perfectly good diesel MB's have been destroyed by this horrible wvo crap.

bobodaclown · #7 08-31-2009, 11:23 PM

Just a quick is the manual cut off lever coming up. When my dad held it down he pushed it in toward the injectors and it was hanging up. I just had to bend it back to the correct position.

JEBalles · #8 09-01-2009, 10:27 AM

Make sure no WVO is in the system when you use the alternative fuel supply and that you use diesel. It is possible that the single tank system has trashed your ip.

pawoSD · #9 09-01-2009, 11:15 AM

Since the car was designed to run on Diesel fuel, running a cold concoction of vegetable oil and whatever else, is not going to help the IP have a long life.....my bet is that it is internally plugged or damaged from running such a system.

vstech · #10 09-01-2009, 11:50 AM

if WVO is the problem, why is it cranking smoothly after it cools down? IP tolerances tighten up as it gets cold? HMM.
slow cranking is usually one thing, lack of volts to the starter. either inspect the cables and VERYFY they are clean and tight on both ends of both cables. or have the battery totally tested out with a REALLY good test kit. one that will put on actually 500amps or so and verify the battery's full voltage output for sustained cranking.
that said, unless the motor is REALLY cranking slow, if there is sufficient compression, it should fire.
when was the last time your valves were adjusted?
have you ever tested your compression?
if it's low, you might want to soak the pistons in some MMO or DIESEL PURGE overnight with the glow plugs out and spin the motor over in the morning before putting the plugs back in.
see if it helps the starting situation.

lupin..the..3rd · #11 09-01-2009, 11:53 AM

Quote:

Originally Posted by vstech

if it's low, you might want to soak the pistons in some MMO or DIESEL PURGE overnight with the glow plugs out and spin the motor over in the morning before putting the plugs back in.
see if it helps the starting situation.

If you do this, you'll be amazed at how nasty the liquid will be that comes out. Please post some photos if you do this!! Motors that have been run long-term on WVO are so horribly disgusting on the inside, combustion chambers all caked up with layers of burnt crap, valves and piston rings clogged with crap, it's *really* nasty.

pixelsblack009 · #12 09-01-2009, 01:59 PM

I would try running it on some diesel or better yet may be some keroseen and may be get the injector pump checked prefessionaly or you could remove the metal fuel lines and crank the engine and see if fuel is welling in, could the injectors be blocked? is the intake manifold blocked make make sure the engine is getting air, remove the air filter tubing that fits onto the intake manifold (big rubber tube that conects the filter with it) then try having the tank filled with keroseen only, bleed the system and try push starting it down a verry hill serface but be safe and all glow plugs extreemly loose? might want to check that

but I'm no professional what do you guys think
PS: I did'nt check the spelling sorry

Jeremy Brett

husk · #13 09-01-2009, 02:26 PM

Quote:

Originally Posted by vstech

if WVO is the problem, why is it cranking smoothly after it cools down? IP tolerances tighten up as it gets cold? HMM.
slow cranking is usually one thing, lack of volts to the starter. either inspect the cables and VERYFY they are clean and tight on both ends of both cables. or have the battery totally tested out with a REALLY good test kit. one that will put on actually 500amps or so and verify the battery's full voltage output for sustained cranking.
that said, unless the motor is REALLY cranking slow, if there is sufficient compression, it should fire.
when was the last time your valves were adjusted?
have you ever tested your compression?
if it's low, you might want to soak the pistons in some MMO or DIESEL PURGE overnight with the glow plugs out and spin the motor over in the morning before putting the plugs back in.
see if it helps the starting situation.

The injection pump could be weak and this would be the reason behind the starting problems. I think heat-soak is at play here, your IP is not creating enough pressure at cranking speeds, thats why when the motor is cold the motor starts up.

zsmith29 · #14 09-01-2009, 05:00 PM

Thanks Guy's for your help.
Tankowner, you are right about me not telling about WVO and the crap in the tank. I think that it is the culprit here.
I am going to change my signature, I forgot how to do it can someone please remind me.

Well, I went to the car this morning and I took off the fuel cap and stuffed a shirt in the filler; it started right up, then I drove it around 5-10 minutes and got it hot, cut it off and it fired right up again, on, off, on, off several more times and it started fine each time.

I cracked open each injector and all 5 were spitting fuel out.

I decided to continue to drive me girlfriends car due to the fact that if her car is in the Panera Bread parking lot and I am broken down around town then it will put us both out.

We will see what happens tonight when I go back to the car and go home.