Mike, Sounds like the ALDA is doing it's job. What timing method is the mechanic using?
I would seriously do a Diesel-Purge treatment before adjusting anything. I would think that both pumps could be gummed up after setting for a couple years. Are you 100% sure you don't have a bad rubber fuel line sucking in air somewhere? Air can make all sorts of wierd stuff happen. I thought I had a bad injector pump once.......poured water over it and it ran better. Noticed I did not see fuel movement in the filter nor any pulses in the cigar tube. Changed out the lift pump and it was way better. Was back to acting up in a few days but water did not seem to have any effect any more. Noticed a couple air bubbles in the filter so got to checking lines. The rubber was cracked inside, lengthwise, so it was letting in a bit of air. Fixed that with new line and all better. Een good so far. Mike On Jun 29, 2013 9:02 AM, "Michael Esh" <michael...@mac.com> wrote: > Peter & Others, > Thank you all for the information and ideas. > I changed out the injectors last night and it made no difference at all. > I did adjust the alda all the way closed and the car would not idle or > achieve and rpm 2500 and was not drivable. When I moved it back out (ccw) > it would run and it returned to the normal terrible running status we have > been battling since the new used injection pump was in installed. I was > then called to dinner. I plan on changing out the alda with one that is > unmolested (thanks Mitch) on Sunday. > Is there a good write up on how to check to see where I stand on this > issue. I have never adjusted the timing and do not intend to try to change > it. I plan on taking it back into the mechanic on Monday and trying a few > adjustments. > > Thanks > Mike > p.s. I fried the alternator in my 78 MGB yesterday when I jumped it after > leaving the lights on. I inadvertently hooked up cables up backwards and > shorted it out. (Yes, I know better) I am not having much luck with my > cars lately. > > > On Jun 28, 2013, at 6:13 PM, Peter Frederick wrote: > > > This was discussed recently. > > > > There are some injection pumps out there that are marked for timing > INCORRECTLY with the result that if you use the normal procedure, the pump > will be 180 degrees out of time, firing the injectors on the top of the > exhaust stroke instead of the injection stroke. The engine will not start > at low temps, will run rough, and smoke like hell with low power. > > > > You must use the drip tube method to check this, and be very careful to > have the injection occur on the compression, not exhaust stroke. > > > > If the pump timing is indeed correct by the drip tube method (which > detects the point at which the pump plunger covers the fill slot in the > sleeve, start of delivery), you should check the CAMSHAFT timing to make > sure it's not a tooth (or two) late. > > > > You should also verify that you have proper valve clearance, as tight > valves will give you low compression and hence huge smoke and no power. > > > > If the car has EGR. disconnect the vacuum line to the EGR valve and make > sure it closes. A stuck EGR will give terrible smoke (as in you cannot see > the car behind you on acceleration), very low power, and funny muffled > knocking, but no other effects. Typically once you have some speed on the > engine power will come back up under light load. > > > > On a newly installed IP, my guess would be something wrong with the > timing unless the car was also running poorly before you replaced the IP. > > > > If it's been run any significant time on pure veggie oil, you need to > check the compression and the condition of the pre-chambers too -- veg oil > is notorious for coking up the entire fuel system along with very serious > varnish formation in the IP. Plugged prechambers will prevent normal > operation. That coke may burn out if you get it to run decently on diesel > fuel, but likely if present will require removal and cleaning of the > pre-chambers. > > > > Peter > > > > _______________________________________ > > http://www.okiebenz.com > > For new and used parts go to www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
