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Voltage spike and missing badly

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Van crazy

Number of posts : 522
Location : buffalo ny
Age : 41
Registration date : 2011-08-04

Voltage spike and missing badly

Post by Van crazy on Fri May 06, 2016 6:03 pm

I broke down today and Im stumped as to whats wrong. The van idles nice but as soon as i give it gas voltage spikes and runs rough....real rough...Dodge 318
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donivan65
Governor
Governor

Number of posts : 11243
Location : San Diego, California
Registration date : 2008-05-12

Re: Voltage spike and missing badly

Post by donivan65 on Fri May 06, 2016 6:49 pm

see if disconnecting the vacuum advance hose changes anything,,,,
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Twinpilot001

Number of posts : 6186
Location : spokane ,Wa.
Age : 68
Registration date : 2009-09-28

Re: Voltage spike and missing badly

Post by Twinpilot001 on Fri May 06, 2016 7:11 pm

Have you looked @ the point set?? check inside the dizzy - carefully!! Look @ all on the advance plate!! affraid
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Van crazy

Number of posts : 522
Location : buffalo ny
Age : 41
Registration date : 2011-08-04

Re: Voltage spike and missing badly

Post by Van crazy on Sat May 07, 2016 1:05 am

I did Twinpilot I looked all over did not notice anything. I will try that Donivan. Im also going to get a fuel filter and see what that does.......
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Van crazy

Number of posts : 522
Location : buffalo ny
Age : 41
Registration date : 2011-08-04

Re: Voltage spike and missing badly

Post by Van crazy on Sat May 07, 2016 1:25 am

Donivan That was it when I disconnect the vacuum advance smoothes right out pretty much. I guess you want me to vacuum test it ... I will after I get back from work this morning thank you......
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donivan65
Governor
Governor

Number of posts : 11243
Location : San Diego, California
Registration date : 2008-05-12

Re: Voltage spike and missing badly

Post by donivan65 on Sat May 07, 2016 6:49 am

that can still lead back to the advance plate,,,,as soon as you hit the gas pedal, the carb sends a vacuum signal to the vacuum advance for it to move the breaker plate and points,,,,something could be loose in that area,,,,
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Van crazy

Number of posts : 522
Location : buffalo ny
Age : 41
Registration date : 2011-08-04

Re: Voltage spike and missing badly

Post by Van crazy on Sat May 07, 2016 7:01 am

pulled a vacumm it moves the advanced plate......
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donivan65
Governor
Governor

Number of posts : 11243
Location : San Diego, California
Registration date : 2008-05-12

Re: Voltage spike and missing badly

Post by donivan65 on Sat May 07, 2016 7:31 am

did you do it while the engine is running to see if moving that breaker plate makes the engine run bad,,,,
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Van crazy

Number of posts : 522
Location : buffalo ny
Age : 41
Registration date : 2011-08-04

Re: Voltage spike and missing badly

Post by Van crazy on Sat May 07, 2016 7:42 am

Went back out ...yes when I pull the plate running badly. I could only pull 7 on the vacumm gage when running but definatly the problem. I lubes the contact points on the plate also moves freely.
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Twinpilot001

Number of posts : 6186
Location : spokane ,Wa.
Age : 68
Registration date : 2009-09-28

Re: Voltage spike and missing badly

Post by Twinpilot001 on Sat May 07, 2016 7:53 am

replace the Vacumn advance,points, CONDENSER!!!!! and lube the cam!! Look @ the wire going into the dizzy from coil!!! CLOSELY!! and set points with a DWELL METER!! cheers
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donivan65
Governor
Governor

Number of posts : 11243
Location : San Diego, California
Registration date : 2008-05-12

Re: Voltage spike and missing badly

Post by donivan65 on Sat May 07, 2016 10:20 am

that sounds like a ground problem,,,,,the points need to be grounded,,,sometimes you need a little ground wire to ground that breaker plate to the base if you cant fix it
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Van crazy

Number of posts : 522
Location : buffalo ny
Age : 41
Registration date : 2011-08-04

Re: Voltage spike and missing badly

Post by Van crazy on Sat May 07, 2016 3:06 pm

GOT IT............... You truly are the man Donivan. I had to clean the 3 contact points on the advance plate. Thank you so much.I would have been on this for a lifetime I bet ....and I hate not drivin the Van........I have fallen in love with this van it wasnt the prettiest but it has treated me great so far.
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donivan65
Governor
Governor

Number of posts : 11243
Location : San Diego, California
Registration date : 2008-05-12

Re: Voltage spike and missing badly

Post by donivan65 on Sat May 07, 2016 4:34 pm

your welcome,,,,,,all the way here from from Possum Trot, Kentucky,,,,,,



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