HELP 67 289 engine issue

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Apr 15, 2007 | 05:20 PM

#11

paddy187

4th Gear Member

Joined: Jun 2006

Posts: 1,264

From: Eke, Belgium

RE: HELP 67 289 engine issue

surely it's always a false economy being low grade for the wife......especially if she finds out....

Apr 15, 2007 | 05:47 PM

#12

Soaring

I ♥ Acer

Joined: Oct 2004

Posts: 17,565

From:

RE: HELP 67 289 engine issue

Quote:

ORIGINAL: rst08tierney

Ok crazy. I found a tangled spark plug wire last night before I closed up the engine last night. This morning I took the car out and It had no problems all the way to the gas station (almost a mile.) I filled up the tank with 7 gallons on 91 and now the car has never run this good EVER.(not to mention it has a bran new carb)My question is was it the wire? Or was it the car not having enough gas?Im in sunny California so its not cold, and I just installed a new 800 cold crank batt.This is my first build, so if my questions seem weak im a rookie.

Also I usually put in the cheap 87 because its my whifes car[:@]will 91 make a differenc since its only a 289? It felt like it did....

It was the wire sparking over to another wire. You still had 9 gallons of gas left in the tank so it could not have been low fuel. Even if the fuel was low, remember that backfiring is caused by an ignition problem, not a fuel problem.

Apr 15, 2007 | 08:45 PM

#13

rst08tierney

Thread Starter

3rd Gear Member

Joined: Apr 2007

Posts: 882

From:

RE: HELP 67 289 engine issue

got to love it. took the car back out later today and the same problems all over. I think im going to start at my mallory box, it seems to be the oldest part of my engine at this point.

Apr 16, 2007 | 03:49 PM

#14

silverbullet69

Joined: Feb 2007

Posts: 28

RE: HELP 67 289 engine issue

I have a Mallory Unilite distributor in my 302, and had the same problem once... tried everything i could think of. It wound up being the darn center of the distributor cap on the inside.Instead of it being a fixed piece that makes contact with the rotory button, its a piece with a spring under it..... The spring would stick and make it lose contact with the rotory button every now and then, making it backfire.I opted for the whole cap, don't know if i could've bought just that once part in the center.Anyway, i had rebuilt the carb and lots of other stuff before i figured out that one!!