White Smoke Continues ?

[mickp]

From a previous posting I am still trying to eliminate the white smoke my BMC 1.5 chucks out ( It is not steam ). I have replaced the exhaust system as the one fitted, badly i may add, had a makshift water injector feeding via 1.5 inch hose to a parsons mixer then out of stern. I now have proper swan neck mixer on manifold and correct size 2.5 inch exhaust piping and a water trap, this all works well, did not cure smoke problem, Have now fitted refurbished injectors and still no change, it has been suggested that the fuel pump can be adjusted slightly to eliminate smoke by altering the timing, this is probably my next move, any usefull suggestions greatly appreciated.
The engine starts and runs well, temp and pressure are normal.

 

[coliholic]

The following was cut and pasted from www.boatdiesel.com. Worth having a look through their troubleshooting guide. Very informative site.


White exhaust smoke is unburned fuel that can be caused by excessive fuel or poor combustion.

Note: Excessive periods at idle can cause a build up of unburned fuel within the exhaust system that will burn off in the first few minutes the next time the engine is operated under normal power. This condition is normal for diesel engines and common in sailboats that idle for lengthy periods charging batteries or running freezers.

Poor Atomization
Causes:
Injector nozzle stuck open [1]
Injector nozzle seat worn [1]
Injector pressure low [1]
Low ambient temperature [3]
Low fuel grade [4]
Injection timing retarded [4]

Poor Compression
Causes:
Leaking inlet or exhaust valves [3]
Worn piston rings and cylinders [3]
Piston rings stuck in grooves [3]

Water in the Fuel
Causes:
Contaminated fuel [2]
Defective cylinder head gasket [3]


How Likely: [1] - Very Common. [2] - Common. [3] - Possible. [4] - Rare. [5] - Very Rare

So maybe gives you some starting points? Have a look at the site, may be other ideas that you've not exhausted yet.

Good luck and the only saving grace is that it could be worse. It could be my boat;-)

 

[DepSol]

Ok so you've heard it before but Soltron can help cure the following ailments


Injector nozzle wear
Low fuel grade
Leaking inlet or exhaust valves due to carbon deposits
Worn piston rings and cylinders, No, but reduces blow by
Eliminates Contaminated fuel
Helps remove water from the fuel

it also:

improves combustion
removes sludge
kills the bug
reduces wear and tear
reduces emissions

blah balh and all the rest of it. For the price of a mechanic lookiing at it it is prob worth giving it a go.

Dom

 

[coliholic]

This sounds jolly good stuff Dom and well worth the money. Tell us all about it;-)


Meanwhile I'll just have another beer.

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> |^^^^^^^^^^^^^^^^^^^\ || \
> | B u d w e i s e r | ||'""|""\
> | _____________ l ||__|__|___| )
> (@!)!(@)"""""**|(@) (@)****|(@)
>

 

[Guest]

Loved the graphic Coli !

Best one yet !

Would be good though if we could sometimes draw a diagram to assist the written stuff. You know , fold flap A to to meet corner of flap B to form a juncture with the triangulation of flap C.

Nah ! Leave it to IKEA

 

[coliholic]

Re: Loved the graphic Coli !

Thanks, though don't claim to have "dunitmeself". Someone e-mailed it to me over the weekend. Must admit I thought it was a good un too. The Westmarine one on their weekly update e-mail's not bad either and for you nice raggies here's a copy if you've not already got it.

~ ~ ~ ~ ~ (\_ ~ (\_ ~ (\_~ ~ ~ ~ ~ ~ ~ ~ ~ ~ (\_ ~ (\_ ~ (\_~ ~ ~ ~ ~

Aagree about the drawings though. Mind you on "that other place", where they've got all pictures and stuff too, you can end up getting bogged down in a lot of time consuming stuff downloading piccies etc. Was one of the reasons I gave up on it, not been there for ages, rather spend what time I can spare here.

Oh and apologies for the Fred Drift.

 

[vyv_cox]

Pull the other one

I may be able to accept that this miracle product can emulsify/atomise/digest water in fuel but I utterly refuse to believe that it can repair worn injectors, bores and piston rings. Does it include its own plating facilities? Or does it just do rebores?

 

[Guest]

Come for the writing - stay for the pictures ! (NM

nm

 

[oldharry]

Re: Come for the writing - stay for the pictures ! (NM

Have you checked that the copper seating washers under the injectors are in place. If you have doubled them inadvertently, i.e. put in a new one over the old one - (and its very easy to get it wrong) - result = white smoke. Same if you miss the washer out, or rarely if you fit washers of incorrect thickness. If they were suplied with your injectors they should be right, but if you re-used the old ones....

I agree with Vyv - any fuel additive that claims to fix mechanical wear or damage needs reporting to the local Trading Standards bods - liquids cannot replace or repair damaged metal components.

Theres a fortune awaiting anyone who could develop such a 'magical compound' - which is why people try it on a gullible public from time to time!

Are you are absolutely certain the white smoke is not steam. It is not easy to tell them apart.

White smoke as such is unburnt atomised fuel. It occurs when there is incomplete combustion in one or more cylinders. Unlike petrol engines where the fuel is so flammable that once ignited it will all burn, diesel may not fully ignite in the combustion chamber for a number of reasons, and pass through unburnt as white smoke for the reasons given above. Compression testing is probably the next course. Fiddling with the very precise setting of the injection pump will only do harm, unless you know how to set it up correctly, and have the kit to do it. So dont!

 

[DepSol]

NO read it properly

I SAID it can help cure the following, "injector nozzle wear" i.e it will help to reduce the continuing wear of the injector nozzles. Please state where I said it would FIX them!

The guy has a problem which he has tried several conventional methods to fix it. One of the conclusions may have been poor combustion which is caused by several factors all of which Soltron can help to reduce or improve. I have always said Soltron will not fix a knackered engine but can help to reduce the ailments that lead up to it ending up that way.

For the sake of a mechanic looking at it for another hour sucking his teeth and shaking his head its got to be worth a try.

Dom

 

[vyv_cox]

Semantics

"Help cure" - "fix" sounds near enough the same to me.

 

[DepSol]

Re: Semantics

So if you ever offer to HELP someone you can guarantee 100% every time that you can FIX it eh?

I dont think so!

Dom

 

[brianrunyard]

"Help cure Injector Nozzle Wear"??
Don't you mean "Help prevent injector nozzle wear"!
Cure means, it will correct wear that has already occured.

Brian
http://homepage.ntlworld.com/brunyard

 

[DepSol]

Ok so the first item does not fully depict cure but does everyone on this forum have to be totally literate we'll have people doing fred drifts on spelling next as well as grammar. I just banded it for ease anyone with common sense would know it aint gonna fix something thats broke duh!

 

[coliholic]

So are you now saying that Slutrot doesn't cure everything Dom? A change of heart eh?

<BG>

 

[toad]

If you are sure it is not steam try advanceing the pump timeing a bit at a time but mark the old position just in case.I had this problem on a old Landrover and had to file out the slots in the pump to get sufficient adjustment to compensate for the wear in the drivetrain and pump.I do not think a fuel additive will work in this case but it would not do any harm

 

[DepSol]

Dont you start with this cure Sh*t I know you are trying to wind me up but I am not taking the bait ;0-)

 

[mickp]

Thanks for your replies, Tommorrow i adjust the pump, well its the next cheapest option, hope it works.

 

[wakeup]

Are they any down sides to using fuel additives no matter how small?

And should I be using a fuel addiive in my nearly new petrol engine to prevent rather than cure future fuel realted problems?

Thanks in advance.

 

[DepSol]

depends what the additive consists of and what use you are getting out of the engine.

If you are running bad fuel you will get greater engine wear poor performance and poor economy. If you have a diesel for example and you run crap fuel and it ends up breakinig down and then you shout for a warranty claim then you could have it knocked back as you are not taking proper precautions to run the engine properly.

Look after you engine by servicing it at the correct intervals and ensuring you use the best quality fuel you can. If you cant guarantee the fuel is good use an additive to improve it.

How many people have you seen say I have got this funny looking stuff in my tank or my fuel is this colour is their a problem. Keep the fuel combuting at the correct level and you will enhance the life of the engine.

Dom