300Tdi smoking when cold

[RDavisinVA]

Me....

 

[1of40]

Injector tips are a wear item on these engines.Manual calls for them to be replaced @ 80k intervals. Most of us drive them until we have to have them. That said these are two stage injectors and the internals do wear, so taking them to an injection shop to be checked out is always a good plan. My guy (same guy Robert uses) charges me $10 an injector.
Are you running any type of diesel treatment ? I dump a bottle into my 418k mile 99 f250 every once in a blue moon and it makes a noticeable difference.

Our fuel here is fairly low quality compared to Europe. They have three grades of diesel @ the pump and the lowest octane gasoline is 95.

John nailed it that your timing is either off or spray pattern isnt right.

Doug, is ATF a conditioner for our IP seals?

 

[Uncle Douglas]

No.The atf is just an old as in very old school way of cleaning injectors. ATF is high in detergents. The tdi injectors are 100% mechanical and are 80-90 yr old technology.
When changing fuel filters you need to fill the new filter with clean fuel. I grew up filling the filters with atf as recomended by John Deere and detroit diesel mechanics back then. The atf trick is not recomended for modern computer controlled common rail system's as the injectors are not pulsed by pressure but instead by electronics.

Reality is that the old CAV/Lucas and Bosch Ve pumps used seals that don't hold up well
to our current low sulpher diesel. Replacement or rebuilt pumps typically use new seal material that address's the fuel issue. Viton is the fix.

 

[Red90]

You have to be a little careful with this. The Bosch two stage direct injection nozzles use very small ~0.2 mm (0.008") holes in the tip that are made using EDM. They get buildup inside the holes and can quickly become restricted or produce a bad spray pattern. The TDIClub guys did a fair amount of looking at used nozzles with an SEM and found that by 100000 miles of normal use, they needed to be replaced due to the buildup.

The concern with ATF is that it contains non-combustible additives that could lead to accelerated buildup. It may be okay once in a while, but I would be worried with regular use. Using a diesel fuel condition would be a better choice as a lubricity enhancer and pump cleaner.

 

[burlsube]

What do you recommend for a lubricity enhancer? I have been using Optilube about every other tank.

 

[AdamSanta85]

What do you recommend for a lubricity enhancer? I have been using Optilube about every other tank.

I usually use Stanadyne (but have used Power Service brand too if they are out of Stanadyne)

http://stanadyneadditives.com/performance-formula/

Reminds me I need to order the specific Injector Cleaner version as I cannot find it local...

 

[Red90]

I use Power Service. It is easy to find around here.

I use a 1 quart Tip 'N Measure bottle in the truck to dispense.

 

[1of40]

Thanks Doug/Guys.

 

[LostChord]

What do you recommend for a lubricity enhancer? I have been using Optilube about every other tank.

This is what I am doing too.