bsweaty
SILVER Star
I wouldn't be here if I haven't done my due diligence with the search bar and the "smoke" thread up top. 1993 Dyna 200 van, BII engine with a VE pump. I am fully stumped here, hoping someone here has experience. Engine has 35k miles on it roughly.
- The engine starts well, especially when warm. When cold(<40F or 5C) it may sputter for a moment and comes on around. Idles great. Appears normal.
- Engine appears to have all 80HP. The van goes 60mph, and with the weight and size... Appears to be accurate.
- Compression numbers are 415, 415, 420, 415. Looks great.
- Valve lash adjustment was done, valves weren't terribly far out of spec.
- Injectors have been replaced. Original injectors are being sent out for a cleaning. Injectors did not help the problem.
- No coolant is missing.
- Oil levels are not going up or going down.
- Timing mark on the injection pump matches the timing mark on the timing case. I have not attempted to adjust timing.
- Fuel filter has been replaced. I have not found a leak in the fuel lines.
Symptoms(I am happy to grab a video):
- Like many diesels, a little white smoke on start at idle, fades as it warms up.
- Decelerating after WOT(not at WOT), or holding throttle above 50% or more, the exhaust bellows out white smoke. Purely unburned fuel.
- No smoke on acceleration, no smoke at idle.
Is there a way that under this scenario, I could be losing/gaining timing or pop pressure at certain throttle? Is this the scenario where my return lines are clogged or not working properly? I have been scouring the internet looking for anything on this topic with no luck. Thanks for any help you can offer!
- The engine starts well, especially when warm. When cold(<40F or 5C) it may sputter for a moment and comes on around. Idles great. Appears normal.
- Engine appears to have all 80HP. The van goes 60mph, and with the weight and size... Appears to be accurate.
- Compression numbers are 415, 415, 420, 415. Looks great.
- Valve lash adjustment was done, valves weren't terribly far out of spec.
- Injectors have been replaced. Original injectors are being sent out for a cleaning. Injectors did not help the problem.
- No coolant is missing.
- Oil levels are not going up or going down.
- Timing mark on the injection pump matches the timing mark on the timing case. I have not attempted to adjust timing.
- Fuel filter has been replaced. I have not found a leak in the fuel lines.
Symptoms(I am happy to grab a video):
- Like many diesels, a little white smoke on start at idle, fades as it warms up.
- Decelerating after WOT(not at WOT), or holding throttle above 50% or more, the exhaust bellows out white smoke. Purely unburned fuel.
- No smoke on acceleration, no smoke at idle.
Is there a way that under this scenario, I could be losing/gaining timing or pop pressure at certain throttle? Is this the scenario where my return lines are clogged or not working properly? I have been scouring the internet looking for anything on this topic with no luck. Thanks for any help you can offer!