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#1
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617. wobbly motor
Used veg.oil for a year.now my engine has the shakes. Adjusted rack damper no difference. Has the veggie oil killed my injector pump? What needs to be replaced.changed fuel delivery pump.what next?
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#2
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Water in your fuel with damage the injection pump.
Injecting cold (below 160 degrees F) VO will damage the cylinder by most likely impacting the rings into the pistons with a build up of carbon. With no information about your system on the car and how you process your fuel, all I can respond with is generalizations.
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Greg 2012 S350 BlueTEC 4Matic 2007 ML 320 CDI 2007 Leisure Travel Serenity 2006 Sprinter 432k 2005 E320 CDI 1998 SLK230 (teal) 1998 SLK230 (silver) 1996 E300D 99k, 30k on WVO Previous: 1983 240D, on WVO 1982 300D, on WVO 1983 300CD, on WVO 1986 300SDL 237k, 25k on WVO (Deerslayer) 1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix 1983 380 SEC w/603 diesel, 8k on WVO 1996 E300D 351k, 177k on WVO |
#3
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They always kind of shake, don't they?
I remember on a 300 TD it was shaking only a little but the car shaked like crazy... new motor mounts and the car became nice and smooth (relatively) but looking at the engine, it was bouncing around all over the place! |
#4
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Motor mounts was my first thought.
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#5
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wobbly
Yes cold injection, my veg oil was filter to 10 microns and mixed with diesel. And at different percentages .I tried a different injector pump but could never get timing right as it was a 602 pump. So it didn't shake .I don't think its damage engine wise. I think its pump damage!
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#6
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maybe because of the VO you've got some leaks in the rubber fuel lines. one of the motor mounts is placed directly below the lift pump where theres lots of hoses above. maybe you had a leak down on there and the motor mount is now shot.
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1981 NA 300D 310k miles |
#7
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If you have the Stock Nozzles the tiny Passages could be plugged with Carbon.
Item 12 shows the tiny passages drilled in the Hole of the Injector Pintel. Even on Diesel Fuel if you don't do regular Injector Purges the can get blocked with Carbon; at least all of the ones I pulled from My Car were blocked Solidly.
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84 300D, 82 Volvo 244Gl Diesel |
#8
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Your injection pump does not have all the elements contributing properly so there will be vibration or rough running issues. Your retarding the inecction pump to partially eliminate the severe number one cylinder knocking does not solve the issue. It just masks it somewhat.
You really should examine how to do the milli volt method of checking and adjusting the number one element that is so far off. Or grab a used injection pump from a pick and pull yard. Getting two threads going that perhaps involve the same issues adds complications. |
#9
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milli volt method
where is this millivolt information?
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#10
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Do a compression test before you spend any money on parts or spend too much time messing around with settings on things that don't usually change much in a single year's time.
__________________
Greg 2012 S350 BlueTEC 4Matic 2007 ML 320 CDI 2007 Leisure Travel Serenity 2006 Sprinter 432k 2005 E320 CDI 1998 SLK230 (teal) 1998 SLK230 (silver) 1996 E300D 99k, 30k on WVO Previous: 1983 240D, on WVO 1982 300D, on WVO 1983 300CD, on WVO 1986 300SDL 237k, 25k on WVO (Deerslayer) 1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix 1983 380 SEC w/603 diesel, 8k on WVO 1996 E300D 351k, 177k on WVO |
#11
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2x:
Your motor mounts are probably shot from old age (they just plain wear out) Adjust your valves, do a compression test. If the compression is good, then get your injectors cleaned/ balanced/ possibly new nozzles. After that I'd check the rack damper and timing
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$60 OM617 Blank Exhaust Flanges $110 OM606 Blank Exhaust Flanges No merc at the moment |
#12
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Archives at the top is where there is a lot posted on the milli volt method. Plus thouands of other things. By retarding your timing to get rid or lessen the number one cylinder knock you should also have lost a little power. Primary timing by the milli volt method is a thread worth reading in the archives. If nothing else one can get some insite from others experiences with it.
Last edited by barry12345; 03-19-2013 at 11:46 AM. |
#13
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millivolt
No loss in power. Its strong.just can't get a smooth idle.
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#14
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wobbly
OK I will clean the injectors. And check compression, but I really think its OK. then do the drip method.
Last edited by davidp; 03-19-2013 at 01:09 PM. Reason: more info |
#15
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wobbly
cleaned delivery valves and elements much smoother! gonna purge next
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