Motor Backfires Thru Exhaust When Trying To Start

[Jim Coleman]

IT STARTED !!!!

Problem must've been the balancer has slipped. With the cover and the correct markings on it, I was able to set it up exactly as instructed. I also had one wire crossed. I only let it run long enough to make sure it had good oil pressure and shut it off. (The water pump leak is also fixed).

Now, can someone tell me the correct break in procedure so I don't wipe out the cam ? I used Royal Purple break in oil.

Thanks !

Jim

[Gaz64]

Jim,

Any flat tappet camshaft run-in involves immediate startup, no mucking around to fire up etc.

Timing light to be fitted, and timing to be verified at around 30 degrees by a second person at startup. Lock distributor.

So the engine needs to start first go, and run at 2000 rpm plus, oil pressure verified and checked during the procedure.

Run engine at 2000 - 2500 varied in this speed range, do not idle, do not blip the throttle. Engine needs to run for 15 - 20 minutes.

Monitor engine oil pressure, engine coolant temp, and engine sound.

Timing can then be checked at 2500, and then at final hot idle speed.

Gary

[patrickt]

Well that's good news. I take it you don't have a solid flat tappet in there.

[Gaz64]

Originally Posted by patrickt

Well that's good news. I take it you don't have a solid flat tappet in there.

I think Jim needs to VERIFY what camshaft he does have.

In post No.1, he says solid lift (lifter) cam.

Now is that a solid flat tappet, or solid roller?

Gary

[patrickt]

OK, you know the SFTs can be kind of finicky on break in.