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68 318 idles good but dogs |
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Mustang Sally 
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Joined: March-18-2015 Location: Northern Ca Status: Offline Points: 4 |
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 Topic: 68 318 idles good but dogsPosted: March-18-2015 at 2:00pm |
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New to the club just picked up this 68 mustang has 318 with holly marine 650 sat for 1.5 years new gas and additive fuel filter pump new carb whistles at low rpm picked up slow to plane get a little carb sputter back fire once in while think it need the 450 cfm and possibly points adjusted not sure what's the cause any suggestions appreciated
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Hollywood
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Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13511 |
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Posted: March-18-2015 at 3:46pm |
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Isn't that what chryslers do?
Start with an ignition tune up. |
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Mustang Sally
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Joined: March-18-2015 Location: Northern Ca Status: Offline Points: 4 |
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Posted: March-18-2015 at 4:17pm |
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Sounds good will do,, lol ya I didn't know always had ford
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21115 |
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Posted: March-18-2015 at 4:58pm |
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I'd go through the ignition system with a fine tooth comb. Points, condenser, dwell, timing (initial and final), cap, rotor, plugs and wires.
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fanofccfan
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Joined: December-13-2009 Location: North Bend NE Status: Offline Points: 1726 |
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Posted: March-19-2015 at 12:22am |
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I agree with the previous experts. I had similar symptoms and they recommended the same advice.....and were correct!
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SNobsessed
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Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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Posted: March-19-2015 at 12:48am |
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Whistle could be an indicator of intake leak. An easy test is to spray carb cleaner around the carb base (while it is running) & see if that changes RPM.
Have fun with your new boat! |
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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Mustang Sally
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Joined: March-18-2015 Location: Northern Ca Status: Offline Points: 4 |
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Posted: March-19-2015 at 6:38pm |
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Good tip I'm having trouble locating the right distributor cap no name or info on what brand any recommendation? Thought west marine but they are clueless, trying to post pic but not sure how here
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Gary S
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Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Posted: March-19-2015 at 6:54pm |
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Your learning fast grasshopper
 Find out what distributor you have or take a pic and post it and on the header of this page on the right is N3 Boatworks,call Zach there with the info and he'll set you up.For pictures go to post reply,not quick reply look for icon with arrow and tree and use that to put up your pic,might have to resize,most use photobucket to do that |
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Posted: March-19-2015 at 7:46pm |
West would be THE VERY LAST PLACE to go for our vintage parts. I'd go to Autozone before West!!!!! All the advice that has been given is great. |
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MustangMadness
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Joined: April-15-2014 Location: Seacoast NH Status: Offline Points: 114 |
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Posted: March-19-2015 at 8:08pm |
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NAPA
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I like a 6' beam on a small lake... My Muscleboat
1975 Mustang 225 307RH |
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Mountain Man
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Joined: May-09-2014 Location: Brevard, NC Status: Offline Points: 124 |
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Posted: March-20-2015 at 10:48am |
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While you have the cap off of the distributor verify that the weights for the mechanical advance move freely on their pivot pins and the springs are intact. The symptom you described aligns with a failure for the timing to properly advance with increasing engine rpms.
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Mustang Sally wrote: