Engine start up, Problem 3: Weak Starter |
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Engine start up, Problem 3: Weak Starter |
OU8AVW |
Dec 17 2014, 11:44 AM
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#1
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Yacht Rigger Group: Members Posts: 1,803 Joined: 1-October 08 From: Granbury, TX Member No.: 9,601 Region Association: Southwest Region |
I'm working through starting my freshly rebuilt 2056. It has the original D-Jet and is a 1975 motor. At first I had no fuel pump, I fixed that.
Now there is no spark from the coil. I traced the lead from #8 on the fuse box to the relay board then out the relay board. I have 12.4v at the coil positive but no spark. I'm testing it with a light-type tester. No bueno.... It is a Bosch coil, i believe it is a "blue" coil. I read here that there should be 1.5 ohms resistance between the two poles on the coil with everything dissconnected. This one tests at 7.4 ohms. A spare coil I had had similar results with no spark at crank and 4.6 ohms resistance. I assume i need a new coil...... Right? |
stugray |
Dec 19 2014, 03:27 PM
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#2
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
Here a cut & paste from my other posts regarding this step:
Here is some help: 1- Dont install the pushrods (cranking to prime with pushrods installed will wipe away the cam lube you put on the cam & lifters) 2 - remove the sparkplugs 3 - install a mechanical oil pressure gauge if you have one. 4 - do NOT fill the oil filter with oil before installation 5 - crank the engine until oil pressure peaks then keep cranking for as long as you are comfortable to get oil through the whole system. (Dont overheat the starter - ~10 seconds at a time, then cool off) 6 - check oil and top off if required 7 - reinstall pushrods & set valve lash (with Jakes pushrods, cold lash is zero) 8 - reinstall spark plugs 9 - proceed with engine first startup & follow Jakes cam break-in instructions "Jake's instructions as it is his cam....." Just out of curiosity, which cam did you get? Did you measure the cam lobes before you installed it? Did you set the valve train geometry? I would be interested in hearing what measurements you got. |
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