LT1 issue

[Ed Wright]

Originally Posted by GUMP

If you got water inside of the Optispark plan on replacing the cap and rotor. In the future fill that plug for the optical sensor with silicone.

^^^^^^^^^ There ya go.

[John Nechiporchik]

As they say in the NFL....After further review"....
The valve train all checked out OK
The motor leaked between 5-7% with one outlier at 9.5% (cold)
There was evidence of moisture in the Optispark connector receptacle.

Tomorrow will replace cap/rotor AND plug the connector hole as suggested.
Thanks for a lot of great help.

John

[John Nechiporchik]

Looks like the ATI balancer needs to come off to get one of the fasteners to the cap. Am I missing something?

[Rob Petrie E395]

Yes you have to pull the balancer off to get the cap or the whole opti off.

[John Nechiporchik]

Got it off. What a pain in the *** to change a dist, cap!!!!
I guess the Engineers never considered the service aspect of their design.

[Rob Petrie E395]

Originally Posted by John Nechiporchik

Got it off. What a pain in the *** to change a dist, cap!!!!
I guess the Engineers never considered the service aspect of their design.

IF you think its bad on a race car. You should try it sometime on a street car with all the emmissions and other crap bolted to the front of the engine. Its a real sweatheart of a deal then. LOL.

How did it look was there water in it?

[John Nechiporchik]

Rob,A minor waterfall came out after the dist cap fasteners were loosened. The area where the rotor and cap appeared OK. The water was behind the white plastic shield. The metal shield was rusty.
Incidentally, The unit still contained the cam timing disc and module. Is this still necessary with the crank trigger or can I take them out?
Also, I could not find a socket to remove the bottom two (recessed) fasteners on the cap.I had to modify a small pair of channel locks to remove them. What size star or metric is that??

Also, filled the Connector receptacle with silicone as discussed earlier.

Thanks,
John

[John Nechiporchik]

OK....The Optispark cap bolts are E4 Torx. Not a socket found in regular tool or auto parts stores. Apparently Snap On and Matco carry them.
However, on another forum A guy posted that the throttle body cover screws are the correct size torx. As I had a spare throttle body, I removed one of the screws, chucked it up in a vice grips and got a tool (however crude) that works.

[Rob Petrie E395]

That is basically what MSD sends you with a new cap and rotor or complete Optispark. Its just a screw with a thick nut on it. As far as taking the stuff out of the inside (wheel and sensor). I have always left mine in with no problems. Glad you found the problem and are back on track.

[John Nechiporchik]

Thanks Rob.