Gonna lower the pressure on my Volvo this weekend. Gave that pin a smack already, and have had remorse every since.
No kidding, and I do this for a living too. But.. I have milked a couple of past Rabbits into running smoother, while reducing white smoke. At the end of the day internal pressure problems usually indicate a worn pump. As far as measuring pressure while adjusting, it is difficult to calibrate a hammer blow to a punch. Just need to modify a socket to git that valve out and get out the ole hammer, and punch and go the other way. Wonder why Bosch didn't put a screw there instead of that pin.
Wonder why Bosch didn't put a screw there instead of that pin.
My guess... same reason the fuel screw has a steel collar welded to it... "if you have to ask, don't touch". ;-)
There *is* a Bosch-specific tool that attaches to the top of the pump and allows you to gradually increase the internal pressure upwards... unfortunately it remains a one-way adjustment however.
Yeah, I know but I must touch it. Got lots of part to put on the Caddy this week end. Im gonna outright molest the pump on it
hi rabbit,
I run a two tank system on my 1.6. one has diesel and the other has a mixture of 4/5 used motor oil, 1/5 kerosene or diesel, one ounce acetone per 5 gal fuel, one ounce seafoam per 5 gal to prevent carbonization, and filter it down to one micron. I start it up and get it up to temp on the diesel, then switch over to the used oil by turning two 3 way valves in the cockpit. the oil is routed through a flatplate fuel heater that I got off ebay for about 74 bucks. If I don't wait for the engine to get up to temp, it doesn't run worth a *** on the oil. I suppose it is somehow related to the thickness of the fuel as well since the flatplate heater thins it out alot. Might be worth a try for you. BTW. when I switch it over on the highway, speed increases when the mixture hits the engine even though i don't change the accelerator position. It sounds a lot quieter too. I switch back to diesel before I shut it down too. I've ran about 6k on this mixture so far with zero problems. I only need to buy a tank of diesel about every 3 thousand miles
