2005 RXP Timing Issues?
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  1. #1
    PWCToday Newbie
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    2005 RXP Timing Issues?

    After rebuilding a 4-Tech motor, I timed the engine using the locking tools and made sure to align the 1503 marks with the head surface. After attempting to start the engine (with no luck), i got a very loud backfire through the exhaust. Can anyone help with this?

  2. #2
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    Re: 2005 RXP Timing Issues?

    Did you line up the crankshaft and counter balance? When you ordered parts did you order the crankshaft that covers your year of engine. 02-05 and 06 and up?


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  3. #3
    PWCToday.com Is My Home Away From Home Grumpy Old Guy's Avatar
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    Re: 2005 RXP Timing Issues?

    Are you using front piston as # 1 ??

  4. #4
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    Re: 2005 RXP Timing Issues?

    Quote Originally Posted by JO2246 View Post
    Did you line up the crankshaft and counter balance? When you ordered parts did you order the crankshaft that covers your year of engine. 02-05 and 06 and up?


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    Hi,
    Yes. I aligned the two marks on the crank and the counter balance. I used the original crank and counter balance.

  5. #5
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    Re: 2005 RXP Timing Issues?

    I timed the motor using piston #3 (front).

  6. #6
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    Re: 2005 RXP Timing Issues?

    I checked my compression on the cylinders and came up with 140, 120, 140. Would the 20psi low on #2 cause the engine not to fire and have the big backfire?

  7. #7
    PWCToday.com Is My Home Away From Home john zigler's Avatar
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    Re: 2005 RXP Timing Issues?

    Quote Originally Posted by BVK View Post
    I checked my compression on the cylinders and came up with 140, 120, 140. Would the 20psi low on #2 cause the engine not to fire and have the big backfire?
    Is an exhaust valve open?
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  8. #8
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    Re: 2005 RXP Timing Issues?

    I am not sure? How can I check?

  9. #9
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    Re: 2005 RXP Timing Issues?

    I would make sure you have the crankshaft locked in properly by pulling the plug in the case and making sure its locked using the locking tool. Confirm the cam sprockets are then lined up. I would then pull to valve cover and lock camshaft to verify its oriented properly. You sure the flywheel is lined up and secured with new flywheel bolts? You sure you have spark on all 3 spark plugs. The compression numbers are not ideal because of the difference but it should run. Follow the manual step by step to lock crankshaft and camshaft. Unless you have valve damage something doesn’t seem lined up.


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  10. #10
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    Re: 2005 RXP Timing Issues?

    I have checked all of those things multiple times. I guessing I have a valve problem on #2. I am assuming I will need to pull the head not in less there is another way to check the valves in place?

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