450 injectors

450dieselfan · Dec 7, 2013

on my 450 when I open the bleeder on each of the injectors it will miss on that cylinder but when I open number 3 the engine acts like its going to stall. do I have 3 injectors not spraying 100%? it seems to idle smooth and full throttle sounds good. it never lacks for power when plowing either. the pump was rebuilt a few years ago too.

Dan MD · Dec 8, 2013

Wish I could help you. Maybe try a compression test through the spark plug holes with the starting valves both open and closed. Would give you an idea of the condition of each cylinder and also to make sure your starting valves are closing 100%. On my SMD, I get a compression reading in the mid 120's on all 4 cylinders and then zero with the valves closed. Also, when you open the bleeders, are you opening them the same amount, and what RPM range are your doing it at?

Dan

450dieselfan · Dec 9, 2013

ill try a compression test and see what it tells me as far as the bleeder I open them just enough to hear a miss. I had it running about 1000 rpms thank you for your help

450 injectors

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