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-   Tuning & Diagnostics (https://www.racingjunk.com/forums/forumdisplay.php?f=22)
-   -   ignition problem??? (https://www.racingjunk.com/forums/showthread.php?t=29349)

supersmurf666 12-05-2010 12:43 PM
ignition problem???
 
have a ticking noise on number 7 cylinder.Pulled plug wire of at plug noise goes away.pulled plug wire off at cap noise goes away.put new plug wire on noise still there.Put new MSD Cap and rotor on noise still there.took plug wire off again noise gone.Took number 1 plug wire off noise still there.changed plug noise still there.Made sure I have no exhaust leaks either before I started with the ignition.

Tod74 12-05-2010 02:22 PM
Is it just a light ticking? I know when a rod is making racket you can often pull the plug wire and quiet it down some because the load is gone on that cylinder. SORRY CAN'T HELP YOU ON THE IGNITION

supersmurf666 12-05-2010 02:43 PM
yes it is just a light ticking.like a small exhaust leak.I didnt even think it could be rod related.Thanks.

supersmurf666 12-05-2010 02:50 PM
can a rod knock really sound like a ticking noise...hope its not,its a fresh motor.

supersmurf666 12-05-2010 02:52 PM
Might be starting on that new motor sooner than i thought.

Tod74 12-05-2010 03:34 PM
Originally Posted by supersmurf666
Might be starting on that new motor sooner than i thought.
Hold your horses I aint saying it's a rod....I was just saying when a rod is knocking it will quiet down some when you pull the wire off. A rod doesn't sound like a light ticking noise. Keep checking back for replies from people smarter than me.

TheYellaBrick 12-05-2010 03:47 PM
Year make model of engine please.

Headers or cast iron exhaust ?

supersmurf666 12-05-2010 04:02 PM
headers,its a 355 sbc,MSD HEI IGNITION.

supersmurf666 12-05-2010 04:03 PM
not sure on the year but it is an 010 block.

TheYellaBrick 12-05-2010 04:39 PM
With the engine at an idle, take a breaker bar or chunk of solid steel rod, put one end against your ear and the other upon various locations around each cylinder, on the head, valve cover, and header. I've successfully used this method of isolating noises for years. It's a cheap but effective 'stethoscope'.


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