Anyone in Michigan with OB CIS knowledge?

Got back at it tonight, plugs are fouled out...but with all the plugs out it turns over freely with no obstructions...looks like it was hydrolocking with fuel...going to get some new plugs and check for spark...if no spark, the only thing that hasn't been replaced in the ignition system is the resistors near the distributor. I'll post more when I get some new plugs...back in a bit.

Thanks,
Josh

Put the plugs in last night...no time to check for spark. While taking the plugs out I broke a rather thick vacuum line, have line to replace, will get back out in a bit and replace and start with the usual suspects...may need to go get some fuel and some fuel system cleaner as well, charge the battery and let the pump run for a while just for some added benefit. I noticed when I boroscoped the cyls that there was quite a bit of carbon buildup on top of the pistons, could assume that there is quite a bit on the valves...any suggestions to a product to clean that stuff out? Or dump the fuel system cleaner in and when I get it fired up the cleaner may get the majority?

Thanks,
Josh

Appreciate all the help...as a technician myself I know that "noises" are hard to diag without actually being there.

Got back out tonight, all plugs are new and in. The entire intake is all back together, all vacuum lines are new now. Tried cranking it over to check for spark...again hard to do when you're by yourself. Video at this point is a no go as well, need 2 people at this point to get anything worthwhile for anyone to help. The infamous "noise" is still present...I was thinking, could it be possible that it would be caused by the cold weather, or based off of the location that I think it's coming from in the lower end of the engine, could be the starter not disengaging or the tt coupler...either way not good juju at this point. I did find out today that there is a gentleman that is not too far away from my house, approx 10 min that has some experience in 928's and with CIS...I may take the car over to his shop in the morning if I can't figure anything else out tonight, or I may just have to bite the bullet and wait until it gets warmer.

Thanks,
Josh

he_mech_usmc;8141 wrote: Got back out tonight, all plugs are new and in. The entire intake is all back together, all vacuum lines are new now. Tried cranking it over to check for spark...again hard to do when you're by yourself. Video at this point is a no go as well, need 2 people at this point to get anything worthwhile for anyone to help. The infamous "noise" is still present...I was thinking, could it be possible that it would be caused by the cold weather, or based off of the location that I think it's coming from in the lower end of the engine, could be the starter not disengaging or the tt coupler...either way not good juju at this point. I did find out today that there is a gentleman that is not too far away from my house, approx 10 min that has some experience in 928's and with CIS...I may take the car over to his shop in the morning if I can't figure anything else out tonight, or I may just have to bite the bullet and wait until it gets warmer.

Thanks,
Josh

Maybe he will agree to stop by and take a listen and maybe he has a flatdeck to haul it with.

928mac;8142 wrote: Maybe he will agree to stop by and take a listen and maybe he has a flatdeck to haul it with.

I've talked to him once, decent enough guy...don't really know if he's got an active shop or just a hobby. He's got a old body us 928 with quad tb's, heard from another guy that they're doing his nephew's car now...don't know what year, just that it's a "black 928". Planning on stopping by and talking to him if I get a chance tomorrow.

Thanks for the help guys...really appreciate it.

I'll get back with anything I find out, maybe it will help the next person.

Josh

Stopped today and talked to the guy just outside of my town, he has agreed to help me out with the car...no idea what he's thinking as far as payment, if anything at this point, looks like he's just a 928 guy that has a severe hobby, he said that he has to get a truck off of his lift before I can get my car over to him, don't know when that will be. His car is an 84 us, gold colored same as a Wessiach, his nephew's car is an 80 euro, new plenty about the big 3 parts suppliers. His nephew's car has the spoiler from 928 motorsports. He was telling me that there may be a rubber coupler at the flywheel that has let loose and has a possibility of making that noise, my car does not have that coupler...got home and dropped the lower bell housing and it has a metal clamp, flywheel gear is shot too...guess that is why the starter was grinding...fml. Guess there is a starting point for something new.

Thanks,
Josh