P38A 2.5 DSE smokes too much

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
RobertZ said:
Hi, no external powerbox. Don't know if the Ecu is chipped or mapped, should take it out and check. It starts fine both cold and hot. Didn't flush the intercooler but I've cleaned the filter of the rocker cover.
No cooling leaks at all.
The intercooler hoses have been checked during the service (new filters, fluids all around, new 4th injector, return pipes etc).
But she smokes and the smoke certainly looks like that of unburned fuel (if I floor the accelerator pedal response is great but I leave a nice black cloud behind for the joy of those who follow me:D )
Click to expand...

There's a setting in the Nanocom sonewhere of 128 (default) that sometimes people increase to mask bad timing. I cannot remember which value though. Cannot remember if increasing that increases fuel across the board or just at idle. Data would remember.
 
Grrrrrr said:
Foot to the floor it will smoke a bit. If they've chipped it they may have gone a little further on the map so you get a little more smoke (but more power). Compression low would give more smoke - carbon build up on valves, that sort of thing. At the end of the day a high-roller 90s diesel is going to smoke a bit when you hammer it.
Click to expand...
No sign of smoke on either of mine with the MAF connected.
 
Grrrrrr said:
There's a setting in the Nanocom sonewhere of 128 (default) that sometimes people increase to mask bad timing. I cannot remember which value though. Cannot remember if increasing that increases fuel across the board or just at idle. Data would remember.
Click to expand...
The 128 you refer to is the idle speed setting, sometimes it is increased to stop stalling on lift off due the the modulation being way out. I would add that with the modulation over 80%,my project car was nigh on impossible to start when hot. With the modulation at 50% it starts immediately hot or cold.
 
Datatek said:
The 128 you refer to is the idle speed setting, sometimes it is increased to stop stalling on lift off due the the modulation being way out. I would add that with the modulation over 80%,my project car was nigh on impossible to start when hot. With the modulation at 50% it starts immediately hot or cold.
Click to expand...

Check RAVE for replacing crank-shaft. Note the 12 thou shim under the cam-shaft locking tool. My modulation is at 80% but the starter barely engages before it fires. Original chains. Timing of FIP as per RAVE with dial guage. Crankshaft as per RAVE with shim. Beru plugs. Platinum 642X battery. I did replace #4 injector a few years ago and it does have a new head, head gasket, valves etc but original tappets. I do still have the hotfix installed.
 
Grrrrrr said:
Check RAVE for replacing crank-shaft. Note the 12 thou shim under the cam-shaft locking tool. My modulation is at 80% but the starter barely engages before it fires. Original chains. Timing of FIP as per RAVE with dial guage. Crankshaft as per RAVE with shim. Beru plugs. Platinum 642X battery. I did replace #4 injector a few years ago and it does have a new head, head gasket, valves etc but original tappets. I do still have the hotfix installed.
Click to expand...
If the modulation was corrected you could bin the hot start bodge.
 
You must log in or register to reply here.

Similar threads

J
Another P38 2.5DSE 4th injector Question
2
Replies
28
Views
1K
JT_spark
J
Louis2.5DSE
P38A P38 DSE fires but won't start
2 3
Replies
58
Views
3K
BDC
B
jimmacD
P38 2.5 FIP fuel flow.
2
Replies
25
Views
939
Datatek
Datatek
O
p38 2.5 diesel
Replies
6
Views
450
omlette
O
landygirl87
Sport Scraping rear brake.
Replies
3
Views
323
Graculus
Graculus
Back
Top