SMOKE ON COLD START UP

[john62m]

do you think i should replace fuel lines when i pump primer pump it doesn,t hold pressure for long i think i have fuel lines on properly but it would be good to check thank you john is the fuel pump you used one of those little retangular twelve volt ones

[Roderunner]

The small rectangular pumps work ok, (Facet is one brand) I think that they are around $35. on ebay, $65. locally, put it just before the fuel filter. When I mentioned injector lines I was talking about the steel lines going from the injector pump to the injectors (just to be clear), they fit the wrong way too, resulting in clouds of smoke.

[john62m]

ok will check my injector lines from pump to injectors i can see that if they wern,t on properly that would put out the timing wouldn,t it that price for fuel pump wont break the bank i will get one of them thank you

[Roderunner]

I will have a gander at my lines to see which goes where

[Roderunner]

Looking at the back of the injection pump- 10 oclock position goes to cylinder 1, 8 oclock to injector 2, 4 oclock to injector 3, 2 oclock to injector 4

[john62m]

thank you will check it out tomorrow afternoon

[john62m]

just wondering roadrunner i looked on ebay and found a pump so do i need a low pressure one and would it have to be hooked up so it has constant pressure or only when the motor is running and thanks very much for the work shop manual geeves it has a very informative trouble shooting section

[Roderunner]

Low pressure is the safest bet, 5 psi should be good, more pressure than that is better for performance but increases the likelyhood of the injection pump developing a leak through old seals (usually the throttle shaft seal). My pump comes on when I turn the ignition on, the small pumps have 2 non return valves built in to them, so fuel can't drain back into the fuel tank overnight. I wouldn't be too concerned about a bit of smoke on cold start up if it only lasts for 15 seconds or so, most of the older diesels do this!

[john62m]

roderunner i checked out my fuel lines from pump to injectors they are all ok i also ordered fuel pump it should be here by early next week i also found a very small leak from hand primer that wouldn,t be helping would it ?

[Roderunner]

john62m wrote:roderunner i checked out my fuel lines from pump to injectors they are all ok i also ordered fuel pump it should be here by early next week i also found a very small leak from hand primer that wouldn,t be helping would it ?

No definitely allowing air into the system , which gives a crap injector spray possibly resulting in unburnt diesel during the combustion event =white smoke!