|
| 1985 chevy 350 marine engine (timing... |
| Author |
Message |
    
jon kahler
| | Posted on Saturday, March 13, 2004 - 04:22 pm: | 
|
Does anyone have these specs, motor backfires through carbourator. if you have any other possible causes i would be very thankful.
i have replaced cap and rotor, plugs, new
carb. this was my last possibility. thanks |
Old Salt
| | Posted on Monday, March 15, 2004 - 09:02 am: |
|
jon kahler
If your engine is a mercruiser with thunderbolt electronic ignition like mine the specks are as follows:
Static timing 8deg BTDC.
Modular timing;
800-1200rpm 0
1600rpm 9to13deg
2100rpm 17to21deg
3000rpm 18to24deg
Total 32deg
Check firing order, you may heve switched plug wires. |
Daniamarine (Daniamarine)
| | Posted on Monday, March 15, 2004 - 07:06 pm: |
|
Hello John.
If you need any other information or parts, you can call me at Dania Marine 1-800-748-7739 or email at daniamarine@bellsouth.net
Your engine problems can be related to your ignition system, timing components or valvetrain.
I will need much more information than you have given. I need to know what was done to the engine before the problem occured.
Thank you, Gabriel Acher |
Abdul
| | Posted on Sunday, March 28, 2004 - 09:12 am: |
|
Backfire is caused by an ignition problem. Check the simple things like getting NEW plugs, wires, rotor, cap. It is very possible that one of the replacment parts you purchased is BAD. Also make sure you have the plug wires in the correct position and the check the counter weights and springs in the distributor.
Going to timming without checking these items is not wise. The engine timming does not "just change". Unless you found the distributor just moving freely it should not be timming. You have not stated how many hours our on this motor. Are you talking 3000-5000 hours? It could be caused by a streched timming chain |
Terry Bambrick
Visitor
| | Posted on Sunday, July 08, 2007 - 08:46 pm: |
|
I have a 1954 Chris-Craft, engine is Chris-Craft, 6 cyl flat head, single carb and coil-points-distributor ignition system.
Today I noticed that there is 'arcing' across the coil lead wire (going to the distributor). It is arcing across from the nut to the rubber high voltage wire cap.
Can you pls tell me what is causing this??
Thanks in advance.
Terry
Gananoque Ontario, Canada. |
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