Author Topic: slow crank  (Read 2927 times)

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Offline ARC C63

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slow crank
« on: May 18, 2013, 09:28:56 AM »
on my 35cb vangard with ec cam, arc rods, cut pistons dual spring valves

when i go to start the mower some time it spins nice other times spins over 1/2 a spin and stops 
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Offline Junior

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Re: slow crank
« Reply #1 on: May 18, 2013, 09:46:29 AM »
Does it have a lot of compression if so you might need to go with a starter that has more torque also you might not have heavy enough battery wire or a loose connection any time I build an engine I upgrade my battery and wires hope this helps some.  :)


Offline ARC C63

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Re: slow crank
« Reply #2 on: May 18, 2013, 09:48:22 AM »
im jumpinf ti with a 850cca batt to the start and dose the same thing
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Offline Junior

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Re: slow crank
« Reply #3 on: May 18, 2013, 09:50:56 AM »
ok is it a stock starter ?

Offline Darkviper

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Re: slow crank
« Reply #4 on: May 18, 2013, 09:52:10 AM »
Try automotive battery cables because my ohv brigs single had to much compression and did the same thing. I used stock starter.
Jonathon Kaup
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Offline Junior

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Re: slow crank
« Reply #5 on: May 18, 2013, 09:57:08 AM »
I had the same problem with my 26 hp briggs it kept frying starters so I went with a high torque starter and some 0 guage battery wire now it spins over with no problem


Offline ARC C63

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Re: slow crank
« Reply #6 on: May 18, 2013, 02:38:31 PM »
i dont thing it is the starting system dont hey have compestion releaf for starting or something of this naecher
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Offline leadslead

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Re: slow crank
« Reply #7 on: May 18, 2013, 05:46:12 PM »
No on comp release try thick cables worked for me my battery cable is about size of my??? pinky finger ???
Also check valve lash new springs it will change
STEVE HENDERSON

Offline Darkviper

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Re: slow crank
« Reply #8 on: May 18, 2013, 08:45:22 PM »
My ohv single with stock starter didnt have compression release and with it being fully built and high compression. I had to roll it over the compression stroke then turn it over or you have to run 2 batterys.
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Offline royalblu68f100

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Re: slow crank
« Reply #9 on: May 19, 2013, 03:57:25 PM »
Also your start button could be loosing connection occasionally.  Does it have a solenoid on the starter or mounted separately? Either solenoid could cause a intermittent problem.
You never win a race by focusing on one aspect of the race!  Motor isn't everything, but you better have a good one!  Chassis too!  But remember, a driver can take a slow machine and make it faster!  I may not have/be the best of any of these but I'm trying!
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Offline leman

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Re: slow crank
« Reply #10 on: May 19, 2013, 10:33:22 PM »
Use thick wires, check your connections, and if you can, ground your battery to the starter, not your frame.  That will give you a more direct circuit to the starter and will help get all of the 850 cca to the starter and not lost somewhere in between.
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Offline ARC C63

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Re: slow crank
« Reply #11 on: May 20, 2013, 07:10:29 AM »
boy do i have egg on my face my new starter had 2 bad coils and was stoping the motor
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Offline birdman_express

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Re: slow crank
« Reply #12 on: May 20, 2013, 07:13:03 AM »
boy do i have egg on my face my new starter had 2 bad coils and was stoping the motor

Well, it is hard to see inside a starter....we never expect new parts to have issues,
but they do from time to time.
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Offline saltyAMF

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Re: slow crank
« Reply #13 on: May 24, 2013, 10:15:30 AM »
sounds like your battery is weak.

if u have hd starter and good connections with properly sized cables thats got to be hgere.  put a voltmeter on it while cranking...  if it dumps you know its junk
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Offline jerb

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Re: slow crank
« Reply #14 on: May 30, 2013, 02:22:18 AM »
even if starter was bad, run the heaviest cable that you can still work with, you would be suprised the difference it can make and as said run the negative to the starter itself as well!
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