My 1969 Chevelle Build

[shelteredV]

Car looks great! The wrap will serve it's purpose well, Avery is good stuff.

[Haulnaz]

Ok so I was able to get the car moving under its own power this weekend and ive come across an issue. The motor has pressure, has good fuel pressure, ive checked the float level in the carb, and it is idling funky. when i take the belt off it fires right up and runs strong. put the belt back on and its slow starting and does a really weird progressive idle sound that i cant really describe so ive put a short video below of it in the driveway. You can here it about every 3-4 seconds and last a few seconds. ive been told to check the tightness of the pulleys, ive been told to check the MSD is getting good power, ive been told the carb could be gunked up due to sitting for over a year. If it was carb related i would think it wouldnt run well even if i took off the belt but it runs good without it. i have not checked the pullys and how tight they are.... would this be a common issue? im wondering if its timing, but again if fires right up without the belts. any thoughts??

[Haulnaz]

Been doing some research and it looks like I need to disconnect the one wire alternator wires and start up the engine and see if that is the issue. I may have some wiring issues with the MSD and i want to say ive wired my power wire for the msd to the alternator charging wire that goes back to the battery. This i want to say was a bad idea and now that i think about it is more then likely why im getting the slow start (alternator is powering the MSD and is not spinning right away at crank up. thus not giving the msd ignition box enough juice. then when it does start its not getting the correct amount of voltage to operator properly. Hope i didnt F anything up and i can still fix this issue.

[Ben@SpeedTech]

Good luck with tracking down the culprit! The car looks great so far, glad you decided to hang on to it and follow through.

[shelteredV]

Run the msd direct to the battery posts with zero detours or interruption, that'll make it right.

[Haulnaz]

Originally Posted by shelteredV

Run the msd direct to the battery posts with zero detours or interruption, that'll make it right.

What gauge wire would you run? 10?

[Haulnaz]

Originally Posted by shelteredV

Run the msd direct to the battery posts with zero detours or interruption, that'll make it right.

Tried this last night... no luck. It actually wouldn't even run.. it would fire up and slow idle for about 3 seconds and die.. im going crazy trying to figure this out.

[z28cp]

Try bypassing the MSD box. Also, substitute a known good coil.

Things happen...

[MAK567]

Are you in Houston?

[Haulnaz]

Originally Posted by MAK567

Are you in Houston?

Yes Sir.