One of my winter projects is to refurbish the injectors on my Perkins
. I have been getting some white smoke and some fuel
sheen on the water
at the exhaust
I suspect the injectors, but have also tried to rule
out any other cause.
is new and correct level. Filters are clean. Fuel
pressure is good. I am not using any coolant
system is not obstructed.
I did a blowby test with the boat in the water
and the results were good.
Since removing the injectors I have done a compression
test and a leakdown test and the results were good for a 35 year old engine
I had planned to exchange the injectors for rebuilt ones, but, I've run into a slight problem; One of the injectors is different than the other three. Three look as though they have never been removed since the engine was built in 1978 (paint on threads was intact). The other one is a different number and the injection pipe looks like it was replaced as well.
Original 3 injectors:
BKBL67S5151 ZV Des.No.5217419 CU (170atm Per. manual)
BKBL67S5299 XI Des.No.5281626 FC (195atm Per. Manual)
The companies that I have talked to will not accept my mismatched injectors for a core
refund, they want 4 identical ones.
I could go to a local diesel
shop and have them rebuilt, but the prices quoted are not firm and are the same or more than buying
re-manufactured injectors including the core
So, I am leaning toward getting a new (remanufactured) matching set of four.
My question is: which ones ?
It looks like the one that is readily available is "FC" like the new one that I have, but the opening pressure on that is different than the ones that came with the engine, about 300psi higher, will that make a difference ?
I don't know if the new injector opening pressure was adjusted to match the old ones.
I am also wondering if I can CrossRef to tractor injectors, which seem to be considerably cheaper.
Any thoughts would be appreciated.