sallyman1

What causes retarded timing in a injection pump? could it be from governor flyweights seized in open position? Or what would happen if governor weights were seized open? high curb idle or low idle or retarded timing?

rebal

what type pump?

sallyman1

generic. lol. reason is i just wrote an exam and wont get my results back for 4 weeks. im going over the ?s i remember and am seeing if i got it right. Does stuck out flyweights mean retarded timing?

Number47

last i knew the gov only controls Rpm and has nothing to do with timing but i havent had an injector pump open in years

Iroc

Gov weights don't effect timing, a governor will cut fuel as rpm picks up past a point and totaly shut off fuel at a certain rpm. In a rotary pump, IE VE pumps on cummins, timing is controlled by advance piston which is affected by transfer pump/houseing and spring pressures. It is different in a inline pump but since I do rotaries I can't explain it just yet (gov is the same timing is different).

Stuck open weights would be a no start if they are stuck fully open.

sallyman1

what about governor weights seized in their start position?

Stuck in open = no start
stuck in normal off position= ?

sallyman1

any1? whats a good site on diesel engine info/ governors for all types of diesels?

Iroc

Stuck in start position (idle or low speed operation position also) would equal a pump with no governor cut out.