rhkcommander
Full Access Member
try these things for me, for giggles:
Skip the glow plugs, just floor the pedal and crank it over for 10 seconds. Now stop and glow for 10 seconds, then crank and see if it starts: if it does, air intrusion. If not, I'd say those diesel rx plugs suck , or some unseen problem elsewhere.
I'm using the bullet-type wellmans right now, that is what uhaul had in there. 7 seconds of glow is perfect for my truck tested down to freezing.
how was the custom harness attached together - crimp or solder. Check whatever method you used and make sure either no wires broke loose from cold solder joint or crimp.
grid heaters on cummins aren't necessary, they start pretty good even cold without them - I've used a heat gun plugged into the intake manifold with limited success. It helps but that is a lot of power to heat things up and a lot of cold metal to work through.
how fast does the voltage come back up, and where does it come back to after glowing? Does the truck crank over slow? Certainly wouldn't help if it did and would explain why ether works better - you would have more battery power for cranking if you skip glowplugs for ether. Keep a can in your truck and keep the manual glowplug system - nothing will blow up unless you glow before spraying ether (or obviously use too much)
Skip the glow plugs, just floor the pedal and crank it over for 10 seconds. Now stop and glow for 10 seconds, then crank and see if it starts: if it does, air intrusion. If not, I'd say those diesel rx plugs suck , or some unseen problem elsewhere.
I'm using the bullet-type wellmans right now, that is what uhaul had in there. 7 seconds of glow is perfect for my truck tested down to freezing.
That is wayyy too long. I'd try another brand - never had issues with bosch using manual control - just don't glow too long. Popular with other diesel engine-types but around here its pretty much BERU or die due to the crappier brands having tip problems, which I never had with bosch or recall anyone else having. Beru work great manual too obviously, cost about double though and seem to take longer to get full heat (thats why they work so well with the controller - it can't kill them so easy). I'm probably going to swap out from my dieselrx plugs back to my beru..i tested one with the battery charger and it took 14 seconds to a full glow and about 12 to get red.
how was the custom harness attached together - crimp or solder. Check whatever method you used and make sure either no wires broke loose from cold solder joint or crimp.
grid heaters on cummins aren't necessary, they start pretty good even cold without them - I've used a heat gun plugged into the intake manifold with limited success. It helps but that is a lot of power to heat things up and a lot of cold metal to work through.
how fast does the voltage come back up, and where does it come back to after glowing? Does the truck crank over slow? Certainly wouldn't help if it did and would explain why ether works better - you would have more battery power for cranking if you skip glowplugs for ether. Keep a can in your truck and keep the manual glowplug system - nothing will blow up unless you glow before spraying ether (or obviously use too much)