When I change gear or when under load my Musso (merc engine) blows black smoke from the exhaust. Does anyone have any ideas please
2006-07-09 09:01:34 · 14 answers · asked by grahammusso 1 in Cars & Transportation ➔ Maintenance & Repairs
If it's a lot heavier than normal, you could be running rich, otherwise you might be okay.
2006-07-09 09:10:06 · answer #1 · answered by fireproof79 3 · 0⤊ 1⤋
black smoke is a sign that you have too mutch fuel or not enough air. i would recomend you pull the air cleaner out and work the engine. if the black smoke goes away you had a pluged air cleaner.thats the cheap fix. if the smoke does not go away then either your rack fuel setting is set too high or you injector tips have gone bad and are driping extra fuel in the chamber. these things need special tools and should really be repaired by a pro.
2006-07-09 09:30:34 · answer #2 · answered by lazlo 1 · 1⤊ 0⤋
Try crisscrossing the ignition wires. If that don't work replace the spark plugs. Or maybe your kaneutzenvalve is shorted. Might try pinching the little tubes running to each cylinder to adjust fuel flow. And removing the catalytic converter. If all else fails try using 102 octane racing fuel that'll surely do the trick !
2006-07-09 09:15:36 · answer #3 · answered by cheezychesster 2 · 0⤊ 1⤋
It's soot, a normal byproduct of diesel engine operation, especially under load. Racket, smoke, and stink are all just guarantees of genuine diesel technology at work.
2006-07-09 09:06:29 · answer #4 · answered by Harry 5 · 0⤊ 1⤋
If it just started doing this, it might be in the early stages of an injection pump problem,,, If it always did this it's probably normal,, also have you noticed any change in the MPG ,,, My dodge cummins will smoke under a heavy load , and that's normal !!!!
2006-07-09 09:37:43 · answer #5 · answered by john l 5 · 0⤊ 0⤋
First of it isnt "black smoke" its unburned fuel like with most drag racers or like you said earlier models. You could mess around with fuel injection i suppose to use more fuel but your mpg would be horrible and its really bad for the environment or anyone within 100feet of you while driving or at a red light
2016-03-16 21:59:16 · answer #6 · answered by Anonymous · 0⤊ 0⤋
most diesel engines do that when you change gears because the RPM drops and all the fuel is not getting burned or you just got a dirty air filter
2006-07-09 09:09:38 · answer #7 · answered by Anonymous · 0⤊ 0⤋
it's not uncommon for a diesel under load to blow smoke...it's what diesels do..unless you have a great loss of power, then you might want to start looking at things..start with the air filter(s)
2006-07-09 09:06:06 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Black smoke means running to rich.
2006-07-09 13:45:05 · answer #9 · answered by lowtek_dh_77 3 · 0⤊ 0⤋
Running too rich. Could be the computer. If you don't have a computer, look for a clog in the fuel tank return line or pressure control valve.
2006-07-09 10:22:46 · answer #10 · answered by jeff s 5 · 0⤊ 0⤋
Possibly dirty injectors. Get a good strong injector cleaner like BGK44 (not that weenie stuff like STP for $2) and see if that helps. Also your injection pump could need re-timing, or you might need new injectors.
2006-07-09 09:11:15 · answer #11 · answered by Anonymous · 1⤊ 0⤋