AndyCook
Well-Known Member
My colorado often takes a few chugs (3-5) of the starter before the engine starts (worse in colder weather)
however, my old 4runner (same engine) used to fire on the first chug of the starter.
it never seems to run rough after starting though
I thought i would test the resistance of the glow plugs tonight.
first i checked they were getting 12v, yes, 12v on the bus-bar, and when relay deactivated after 20-30secs it went to 0v
so power getting to the plugs - yes!
I tried starting the engine with the power disconnected to the glowplugs out of interest - it started same as usual! a few chugs of starter, so plugs dont seem to help! .
I checked voltage of battery when plugs going through preheat phase, 12.2v, and rose to 12.4 when the relay clicked off at end of preheat, so seems the plugs are using voltage.
right, resistance. I got nowhere with this...
i removed bus bar from 2 of the plugs, turned my voltmeter-resistance device to the horseshoe symbols - ohhms?
put positive on top of plug and negative on base threads of the plug or the hex portion higher up. it would show some numbers, then plummet to zero - if i move the probe around same would happen - it would never hold a steady figure!?
what am i doing wrong?
I started to try and remove a plug, but chickened out becuase it seemed it would need a fair bit of torque to remove, and i didnt want to risk shearing it as i need to get to airport in the morning for a work trip..
so any tips on measuring resistance, since i cant get a steady reading and it drops to zero
tips on removing plugs? worried about snapping them...
how many "chugs" of starter does it take for other colorado owners on here to get engine firing?
want to get this sorted before winter returns
however, my old 4runner (same engine) used to fire on the first chug of the starter.
it never seems to run rough after starting though
I thought i would test the resistance of the glow plugs tonight.
first i checked they were getting 12v, yes, 12v on the bus-bar, and when relay deactivated after 20-30secs it went to 0v
so power getting to the plugs - yes!
I tried starting the engine with the power disconnected to the glowplugs out of interest - it started same as usual! a few chugs of starter, so plugs dont seem to help! .
I checked voltage of battery when plugs going through preheat phase, 12.2v, and rose to 12.4 when the relay clicked off at end of preheat, so seems the plugs are using voltage.
right, resistance. I got nowhere with this...
i removed bus bar from 2 of the plugs, turned my voltmeter-resistance device to the horseshoe symbols - ohhms?
put positive on top of plug and negative on base threads of the plug or the hex portion higher up. it would show some numbers, then plummet to zero - if i move the probe around same would happen - it would never hold a steady figure!?
what am i doing wrong?
I started to try and remove a plug, but chickened out becuase it seemed it would need a fair bit of torque to remove, and i didnt want to risk shearing it as i need to get to airport in the morning for a work trip..
so any tips on measuring resistance, since i cant get a steady reading and it drops to zero
tips on removing plugs? worried about snapping them...
how many "chugs" of starter does it take for other colorado owners on here to get engine firing?
want to get this sorted before winter returns