bhardwick
04-11-2010, 06:09 PM
Well here goes, First time to post on this site, I have spent a considerable amount of time reading here though.
I have installed a new long block in my 1994 K 3500, the old one over heated pulling a load of horses and the # 3 cylinder took a LARGE drink of antifreeze so out with the old and in with the new. The old had 245000 on it.
So back to my issue, New long block is installed & everything is hooked up & I am ready to crank er over & blead the injector lines & fire this baby up.
1.) I turn the key to on & I have no SES light & no glow light, no point in cranking on a new engine with no SES & Glow - I check all the fuses they all check out good so i start back over all the connections- batterys, grounds, main harness at back of fire wall, glow plug controller ect.
2.) While i am checking all connections out i realize that when key is turned to the on position my lift pump runs all the time- i am thinking the OPS or Relay are bad, replaced both and lift pump still runs all the time when key is in run position. However if I crank engine over I show oil pressure on gauge ( but engine has never started) and then when i turn key to off the lift pump runs until oil pressure drops off. OPS is working then I think ?
3.) Also i discover that when key is turned to run i dont get any clicking from glow controller, I do have 12 volt power to the large red wire coming in to controller & 12 volt power to small red wire ( pin A ) on controller but no power to yellow wire ( pin B ) which is from the ECM-Right ????
4.) Fuel solenoid does not clink at all when key is turned to run but if I remove it & hook it direct to 12 volt power it will click and operate plunger.
Ok here is the weird part, if i test power to the fuel solenoid I have 12 volts on the hot side & 7 volts on the ground side-really no kidding & this is whether the fuel solenoid is plugged in or not, installed or not.
By now i am thinking I have a short some where & it is backfeeding back through the ground but i am running out of ideas for places to look- please help!!!!
What i have done- I have, as previously mentioned replaced the OPS, Lift pump relay, Lift pump, new glow plug controller & new SSD dual element fast start glow plugs, # 9 Resister and 2 brand new 800 cca batteries and I replaced the ECM all with no change.
The injection pump has about 30,000 miles on it & the PMD was I belive replaced at the same time as the IP. I just relocated the PMD with SSD's FSD Heat Sync located on the intake crossover & and i do have 12 volt power to the pink wire going to PMD when key is on.
I ran a ground from the Heat Sync back to the IP where it was origionally and have also cleaned up the other grounds & even added some new ones.
Much of what I have done has been from either correspondence with Walt at SSD or through reading on this site. This site is wonderful and i have learned a lot about my truck from it.
Sorry about the long post, I will try to be breif from here on but wanted to give you enough history.
Any help you can offer would be much appreciated as i am near to max frustration not being able to hear this new 6.5 sing.
I have installed a new long block in my 1994 K 3500, the old one over heated pulling a load of horses and the # 3 cylinder took a LARGE drink of antifreeze so out with the old and in with the new. The old had 245000 on it.
So back to my issue, New long block is installed & everything is hooked up & I am ready to crank er over & blead the injector lines & fire this baby up.
1.) I turn the key to on & I have no SES light & no glow light, no point in cranking on a new engine with no SES & Glow - I check all the fuses they all check out good so i start back over all the connections- batterys, grounds, main harness at back of fire wall, glow plug controller ect.
2.) While i am checking all connections out i realize that when key is turned to the on position my lift pump runs all the time- i am thinking the OPS or Relay are bad, replaced both and lift pump still runs all the time when key is in run position. However if I crank engine over I show oil pressure on gauge ( but engine has never started) and then when i turn key to off the lift pump runs until oil pressure drops off. OPS is working then I think ?
3.) Also i discover that when key is turned to run i dont get any clicking from glow controller, I do have 12 volt power to the large red wire coming in to controller & 12 volt power to small red wire ( pin A ) on controller but no power to yellow wire ( pin B ) which is from the ECM-Right ????
4.) Fuel solenoid does not clink at all when key is turned to run but if I remove it & hook it direct to 12 volt power it will click and operate plunger.
Ok here is the weird part, if i test power to the fuel solenoid I have 12 volts on the hot side & 7 volts on the ground side-really no kidding & this is whether the fuel solenoid is plugged in or not, installed or not.
By now i am thinking I have a short some where & it is backfeeding back through the ground but i am running out of ideas for places to look- please help!!!!
What i have done- I have, as previously mentioned replaced the OPS, Lift pump relay, Lift pump, new glow plug controller & new SSD dual element fast start glow plugs, # 9 Resister and 2 brand new 800 cca batteries and I replaced the ECM all with no change.
The injection pump has about 30,000 miles on it & the PMD was I belive replaced at the same time as the IP. I just relocated the PMD with SSD's FSD Heat Sync located on the intake crossover & and i do have 12 volt power to the pink wire going to PMD when key is on.
I ran a ground from the Heat Sync back to the IP where it was origionally and have also cleaned up the other grounds & even added some new ones.
Much of what I have done has been from either correspondence with Walt at SSD or through reading on this site. This site is wonderful and i have learned a lot about my truck from it.
Sorry about the long post, I will try to be breif from here on but wanted to give you enough history.
Any help you can offer would be much appreciated as i am near to max frustration not being able to hear this new 6.5 sing.