Mitsubishi Delica Owners Club UK™

scattman · Guest

okay ,iv'e a slight problem wich is making me have to think too much (not good)
I now have black smoke when i blip the throttle (fairly low rev's)which tends to clear when i accelorate (still a fine smoke present)
Have fitted the blanking plate ,no difference :?
Will be putting some injecter cleaner through this week (fingers crossed) Rolling Eyes

One question though (for those in the know)---this seems to have accured since fitting the larger bore stainless exhaust ,so i'm thinking could this have effected the pump settings

The smoke is as i say when blipping the throttle lightly and quickly and no smoke at idle--it's doin my head in at the mo
ANY IDEAS Question

SCATT

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ricke · Posted: Sun Mar 25, 2007 17:11 Post subject:

How long have you had your exhaust on fella...

Ricke
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scattman · Guest

Just a few weeks mate
Don't use the Deli every day so not many miles since fitting at all :?

SCATT

TyrantinTruro · Joined: 13 Feb 2005 Posts: 529 Location: Truro Cornwall

well i must admit since i had the ss side exit pipe on ,i have noticed a lot of black smoke (or more),now whether this is because i can now see it when before it was left behind, but when the misses has driven off in it before (ie when we first had it) i never noticed any smoke out of it at all,it has now done 100,000 klms and I've been thinking it may be down to injectors need cleaning, egr needs cleaning (egr has been left as is as it wasn't smoking at all) or maybe both,or could it be down to a decrease in exhaust gas temperature due to bigger bore or is that just another can of worms
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ricke · Posted: Sun Mar 25, 2007 20:11 Post subject:

Did the injector cleaner work at all...was there a marked or little improvement.....

The bigger bore exhaust will probably have reduced the backpressure to the engine, does the new system have the same amount of boxes in it as the old....

Ricke
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scattman · Guest

scattman · Guest

It's now had about 25 litres of fuel with cleaner in it go through the system with no change to black smoke
Although she now starts with less whitish smoke and idles smooth after 2/3 seconds (marked improvement there)

Will have to check injecters/pump adjustment/tps etc one by one to eliminate them

OH and i have just swaped the turbo for another one (exactly the same)so turbo discounted
Question

SCATT

johnny diamond · Joined: 09 Oct 2005 Posts: 650 Location: Doncaster

doubt if its exhaust scatt, mine is a straight thru stainless ( no baffles at all ) slightly bigger than the down pipe to its side outlet,and has no influence on anything :D
what are you running as an air filter ??
and is the crankbreather clogging it where it entres the inlet system ??
I've removed mine and it vents under the wing now :D
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scattman · Guest

Hi Johnny, how's tricks mate
Was realy wondering wether the exhaust could have brought forward a problem that could have been hiding i suppose
Air filter is original (very clean)should put a better one in i suppose,but no difference when i took it out altogether for a while
Crank breather should be okay as it is nice and wet/oily Rolling Eyes

but i'll check it out tommorow

The smoke isn't that bad as i can't use the bus,it's just i don't like the smoke suddenly starting and i'm deffo not one for leaving it

Thanks for the input Wink

SCATT

johnny diamond · Joined: 09 Oct 2005 Posts: 650 Location: Doncaster

i fitted an aftermarket filter and pipe and bracket and noticed no percievable differance whatsoever,apart from the intake noise that got up me tits Rolling Eyes

so went back to the mitsi unit :D
maybe you need a slight fuel pump adjustment,as i see it you are now running with a compleate charge of fuel and air this should result in a better combustion and slightly hotter explosion, so would stand some down fueling,now that the mix does not include spent gases via the egr Shocked

i keep meaning to mention this to the local specialist to see if this theory holds water or not Rolling Eyes

my theory is that mitsi added more fuel to encourage a sustained burn with less oxygen but is that feesable Question

......wheres them engine technology books :D :D
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scattman · Guest

Took the balanking plate off,since it didn't seem to have any effect either way (on the smoke that is)and if it aint broke Wink

Decided to turn the fuel down Shocked

Who the hell thought of a place like that for an adjustment screw Twisted Evil

Turned it out halfe a turn and can see improvement already (just had to alter idle etc Wink

Plan is to give it a run tommorow and if the improvement remains i may take the screw out another flat or two (don't want to go too far 8) 8)

SCATT

scattman · Guest

Well after turning the screw out three quaters of a turn "NO MORE SMOKE"
Just need to alter anything that has been effected by this adjustment(cables etc/through idle adjustment) and the chocking system (to which there seems to be two parts (mechanical/vacume)
Then it's out for a run to see if any power lost

SCATT

andyj · Joined: 08 Sep 2006 Posts: 2412 Location: up norf

"and the chocking system (to which there seems to be two parts (mechanical/vacume) "

where abouts does this live then scatt?...as you read from my other post I'm going to mess with the pump on mine cos of black smoke.. so if you could give me some pointers on how to sort the choke out that would be great

scattman · Guest

Follow this link for choke mechanical
http://www.MDOCUK.co.uk/forums/viewtopic.php?t=7182&highlight=cold+start+choke
As for the vacume part "leave alone" as it is basicly for keeping the revs even when air-con is switched on,so should not be part of your problem Wink

SCATT

DelicaMark · Joined: 03 Oct 2007 Posts: 15 Location: Duncan, BC, Canada

Hi! New to this site, but frequent the Delica.ca one. Anyway, Scattman I am interested in the screw that you adjusted to turn the fuel down and where it is located. I am assuming that is a bit difficult to get to by your post. I have a similar sounding issue that I would like to try and fix.

-Mark

DelicaMark · Joined: 03 Oct 2007 Posts: 15 Location: Duncan, BC, Canada

Hi agian! Can someone who has adjusted the fuel adjustment screw help out with the location of the screw? I thought that I understood the location but saw a figure in a Delica manual (that I am not allowed to post Rolling Eyes

) that made me think otherwise. The bolt on the back of the injector pump, in the middle of the four injector lines is what I thought was the adjustment. The manual states that this bolt in the middle of the injector lines is a Timing Check Plug. It also appears that a special tool is required to adjust this...once the plug is removed.

If this is not where the adjustment is can someone please point me in the right direction. I would really appreciate it.

Thanks,
Mark

Lewis · Posted: Fri Nov 23, 2007 1:08 Post subject:

Scattman posted a picture of an adjustment screw for the L400 fuel pump mixture on this post:-

http://www.MDOCUK.co.uk/forums/viewtopic.php?t=15185

HTH
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DelicaMark · Joined: 03 Oct 2007 Posts: 15 Location: Duncan, BC, Canada

I now see my confusion....L400 vs L300. I have a L300. I wonder if there is such a thing on the L300's injection pump because it looks different than what scattman has shown in his picture. I will have to have another look tonight for something that resembles what is shown in the picture.

Thanks Lewis for pointing me to the other post! If you have any further thoughts on whether the L300 has an adjustment screw like is shown in the picture for the L400 I'd appreciate it!

Thanks,
Mark

Lewis · Posted: Fri Nov 23, 2007 1:44 Post subject:

May help if you also post the query in the L300 tech section, as the L300 owners will spot it quicker.

In the meantime I will PM Mystery Machine (Bruce) to look at this post. :D
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DelicaMark · Joined: 03 Oct 2007 Posts: 15 Location: Duncan, BC, Canada

Good point Lewis Embarassed

. I originally picked up this post from the EGR section of the Forum Index....kind of lost the fact that it was a L400 post. I'll be more aware next time!

Thanks for passing it on to Bruce.

-Mark