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PostPosted: Thu May 30, 2019 11:07 am 
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Joined: Sun Oct 14, 2018 6:54 am
Posts: 20
Current ride: 2007 Ulysses
Location: Elmswell Suffolk
Sorry if this is an obvious question:

How does one perform a compression test with the engine rotated for service?
Or, more precisely - How do you get the starter motor to turn with engine rotated?

Don't see how you can do it with the engine in position so you could do it warm etc due to plug access.

I've wired the starter motor directly to the battery with the starter and solenoid energised, battery not connected: Result - a few random lights on dash. No response from starter motor.

Your thoughts much appreciated.

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PostPosted: Thu May 30, 2019 1:27 pm 
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Joined: Wed May 06, 2009 7:42 pm
Posts: 2834
Current ride: M2 Razorback
Location: Mouth of the Port in the Shire of Hamp
Bublnsqueak wrote:
Sorry if this is an obvious question:

How does one perform a compression test with the engine rotated for service?
Or, more precisely - How do you get the starter motor to turn with engine rotated?

Don't see how you can do it with the engine in position so you could do it warm etc due to plug access.

I've wired the starter motor directly to the battery with the starter and solenoid energised, battery not connected: Result - a few random lights on dash. No response from starter motor.

Your thoughts much appreciated.

Have you disconnected any earths?....

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PostPosted: Thu May 30, 2019 2:16 pm 
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Location: Manchester
Yes he has.

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PostPosted: Tue Jun 04, 2019 12:16 pm 
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Joined: Sun Oct 14, 2018 6:54 am
Posts: 20
Current ride: 2007 Ulysses
Location: Elmswell Suffolk
:headbang: :headbang: :headbang:

Thank you

Turning over now

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PostPosted: Tue Jun 04, 2019 6:39 pm 
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Joined: Tue May 05, 2009 8:00 pm
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Current ride: X1 2001 White Riot
Location: southampton
:yup:

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PostPosted: Thu Jun 06, 2019 11:23 pm 
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Joined: Sun Oct 14, 2018 6:54 am
Posts: 20
Current ride: 2007 Ulysses
Location: Elmswell Suffolk
I don't dare to ask how you do a compression test as per the manual - with a warm engine.

Paul

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