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Does anyone know what is the purpose of this connection on the RIGHT hand side that is circled? I was at the shop and they were still working on getting it running but the owner mentioned that he has yet to find out where this goes? Can't seem to find the harness it goes in and what is the purpose of this connection? Just thought I would see if anyone knows.



Also what is this for? this cut off piece in the back of the intake manifold. Its on the left in the top picture and here is a better shot of it. Sorry for the quality its on a camera phone.

 

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That electrical harness connector in your picture is what supplies power to your opti-spark distributor:thud: .....the car WILL NOT run without it being connected.......there's a connector (not in your pictures) thats about 2 feet long that goes from the connector that you have in the picture, and then plugs "directly" into the top of the opti-spark distributer unit......if you stand on the passanger side of the car while looking at the engine, you can see where it would connect to the top of the opti-spark unit itself (down under the throttle body and right next to where the thermostat goes)...........In your other picture with the "pipe"....thats part of the exhaust gas recurulation system(IE:emission equipment) ....since it's been destroyed and cut and crimped like that ...it will NEED to be blocked off right where it connects to the manifold with an EGR block off plate....You can pick them up on ebay or TPIS has them as well.......there are "two" block off plates that come in the kit..use them BOTH, "removing" the actual EGR valve and blocking that too....they both go on the rear of the intake manifold right next to one another......I hope this second shop knows what their doing.....these are basic connections for an LT1/LT4 engine.......good luck with it........Joe:thumbsup:
 

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http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=011&sspagename=STRK:MEWA:IT&viewitem=&item=320112674654&rd=1,1 Heres what the Opti-spark harness connector looks like... and the part number is also listed in the auction incase you need to locate one....try to get one from Ebay if you can...they're VERY expensive from GM.........and heres what the block off plates look like http://cgi.ebay.com/ebaymotors/CHEVY-LT1-KIT-BILLET-EGR-BLOCK-OFF-CAMARO-Z28-CORVETTE_W0QQitemZ220113526907QQihZ012QQcategoryZ33607QQssPageNameZWDVWQQrdZ1QQcmdZViewItem ......Joe:thumbsup:
 

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thanks joe. The shop plugged it in but still nothing. It won't start at all just cranks. The car is soo close to be finished so im really excited because the engine work, converter, and gears are done. But it won't start. And im getting really nervous about it.

what in the world could it be? something with the computer or anything? alarm thing or whatever. I hope the car gets running soon. :D
 

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El Teafive
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thanks joe. The shop plugged it in but still nothing. It won't start at all just cranks. The car is soo close to be finished so im really excited because the engine work, converter, and gears are done. But it won't start. And im getting really nervous about it.

what in the world could it be? something with the computer or anything? alarm thing or whatever. I hope the car gets running soon. :D

Does it Have:

Spark?
Fuel?

does it seem to want to start but will not?
 

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Discussion Starter #6
there seems to be spark but no fuel. all it would do is crank. it won't try to fire up at all. ill keep you guys posted
 

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El Teafive
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there seems to be spark but no fuel. all it would do is crank. it won't try to fire up at all. ill keep you guys posted
What have they done to check the fuel? after it has sat, when you turn the key does the pump run? have the troubleshot the Fuel pump circuit fromt he ECM to the pump? Have they put a fuel pressure gauge on the fuel rail to see if you are even getting pressure?
 

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thanks joe. The shop plugged it in but still nothing. It won't start at all just cranks. The car is soo close to be finished so im really excited because the engine work, converter, and gears are done. But it won't start. And im getting really nervous about it.

what in the world could it be? something with the computer or anything? alarm thing or whatever. I hope the car gets running soon. :D
Good luck with your Vette, I just wanted to say you have a beautiful color como- aqua- has always been my favourite! and hard to find here,
Cheers!:thumbsup: save the wave.
 

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there seems to be spark but no fuel. all it would do is crank. it won't try to fire up at all. ill keep you guys posted
Sorry I haven't had a chance to call you back........busy at work here:rolleyes: ...........Ernesto... a car "can" still crank and not be getting spark sometimes(like when the coil is unplugged, ECT ECT...)........tell them to pull a spark plug boot from a plug location....THEN, pull the plug out entirely.....THEN, RE-connect the spark plug to the boot... THEN, have someone crank the engine over (while watching the removed sparkplug with connected plugwire) and see FOR 100% FACT IF THERE "IS" OR "IS NOT" SPARK... there is NO "seems" here:D..........since (for a fact) they diddn't even bother to have the opti-spark harness hooked up "at all" untill I mentioned it........I wonder, do they even have the coil wire going from the coil(on passenger side head face) to the other "top side" coil wire location on the optispark unit????? ..........they seem to not be understanding that the opti-spark distributor is just like a normal "old school" cars distributor but in a different place.......but never the less, it still needs to be connected correctly, installed and indexed with the cam correctly, wires in the correct locations, ECT, ECT....>>>>>>>>.........it's amazing the morons out there that try to work on cars :crazy: ........any decent mechanic would be able to narrow the issue down within 15 minutes(no kidding)......like I said before...I hope they did the important things right.......also make sure all your MSD Digital 6 ignition boxes connections (and ground) are connected correctly.....it's VERY easy not to have things pluged in correctly for the MSD's harness..............Joe:thumbsup:
 

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thanks gumpy for the compliment! at first I hated the color but with the blackout kits it looks awesome! i've gotten a lot of good compliments on it.

so far the car still won't start. Seems like its just not getting enough fuel pressue and the fuel won't reach the injectors. The shop said it was going to keep trying to check things out but looks like thats the issue im having with the car....it sucks!! but oh well

hope to have it running real soon!
 
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