Author Topic: new1250 engine cranks and pops but wont start  (Read 5200 times)

Offline jim19

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new1250 engine cranks and pops but wont start
« on: December 06, 2011, 09:25:43 pm »
I bought a used 1250 sealed engine and just got it in and tried to start it.....it pops out the exhaust (loud) but won't start. Sounds like timing is way off. I have a blue plate on it and tried moving it both ways but doesnt do anything different?? need help




Offline IraceLegends77

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Re: new1250 engine cranks and pops but wont start
« Reply #1 on: December 07, 2011, 08:52:28 am »
Are you sure you have the coils hook-up correct? I would try changing them around first. It is easy and fast. Just a starting point.
Scott Wilkerson #77   Vision Graphix Racing


Offline jim19

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Re: new1250 engine cranks and pops but wont start
« Reply #2 on: December 07, 2011, 09:04:45 am »
they should be correct i never undid any wiring of coils or ignition I just unbolted coils from the carbs and swung them out of the way.

knoxracing

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Re: new1250 engine cranks and pops but wont start
« Reply #3 on: December 07, 2011, 09:32:48 am »
I believe you have the coils firing the cylinders out of order. One coil should fire plugs 1 and 4, the other 2 and 3.  Take the plug wires that feed 1 and 4 and put them to 2 and 3. Take the wires that went to 2 and 3 and place them on 1 and 3. On the old black box system you could just reverse the pickup wires and bam it would do the trick, I am not sure if you can do the same with the blue plate.

Offline IraceLegends77

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Re: new1250 engine cranks and pops but wont start
« Reply #4 on: December 07, 2011, 10:42:34 am »
That what I was trying to say Dennis but just couldn't get it from my brain to the keyboard.
Scott Wilkerson #77   Vision Graphix Racing


knoxracing

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Re: new1250 engine cranks and pops but wont start
« Reply #5 on: December 07, 2011, 01:29:53 pm »
Well I did not mean to repeat your post, lol I just did not pay attention close enough. Either way i hope we both helped him!


Offline jim19

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Re: new1250 engine cranks and pops but wont start
« Reply #6 on: December 07, 2011, 05:42:53 pm »
THANKS to the both of you, I fixed the problem in five minutes...thanks. I still dont know why same blue plate same coils and same ignition....why are the coils are reversed, they are even marked on coils where wires go, so I didn't just forget....

OH WELL PROBLEM SOLVED

 

anything