OldIron82
Full Access Member
Hello everyone. After almost a year I am still trying to hunt down this partial miss.
I thought it was a lazy lifter, so I replaced all 16. Also checked all the push rods, nothing bent. Most recently I did a compression test, and here you will find the numbers. The injectors are only two years old, and the injection pump I bought a brand new 100cc from a very reputable builder from here. I am seriously at a loss of where to go from here. I don’t know if you can have a weak port on a injection pump?
The worst part of this situation is the miss varies in intensity. Some days it’s barely noticeable, other days it’s very pronounced. Now that winter is setting in its a total dead cylinder on cold mornings and smokes horribly, then suddenly the cylinder wakes up and it’s back to the partial miss.
My thoughts are to swap injection pumps, and do a leak down test. I can only think it’s fuel problem or some kind of valve problem.
Thanks
I thought it was a lazy lifter, so I replaced all 16. Also checked all the push rods, nothing bent. Most recently I did a compression test, and here you will find the numbers. The injectors are only two years old, and the injection pump I bought a brand new 100cc from a very reputable builder from here. I am seriously at a loss of where to go from here. I don’t know if you can have a weak port on a injection pump?
The worst part of this situation is the miss varies in intensity. Some days it’s barely noticeable, other days it’s very pronounced. Now that winter is setting in its a total dead cylinder on cold mornings and smokes horribly, then suddenly the cylinder wakes up and it’s back to the partial miss.
My thoughts are to swap injection pumps, and do a leak down test. I can only think it’s fuel problem or some kind of valve problem.
Thanks