No start. Help!

[Blindsey]

Just rebuilt a 420A Now it wont start. It seams to be cranking really slow. and backfires from the intake.

 

[ndcjr]

Sounds like a timing issue. Id make sure, you could do $$$$ damage.

 

[bullettdsm]

Double check timing. Be sure that you didn't put cam gears on backwards. do a quick search for info on either subject. I'm just passing through, no time.

MB

 

[spoonman]

This link should help read through it.


How to diagnose a no start

 

[RSTeclipse97]

Deffinately sounds like a timing issue, tread carefully till you can find whats wrong