97 xp aceleration problem

[stealthdoo]

New eng fro SBT run great for about 10 hrs after breaking. The problem is sometimes hard to start & it will plane but will not go over 30mph unless it hit a wave and go airborne. then will go up to 65 is like it hit overdrive. I love this sky but i will like to have a smooth transition from 0 to 65 any IDEAS [img]/graemlins/angryfire.gif[/img]

[stevepaulus]

sounds like it could be the rectifier od bad or corroded connection at the rectifier causing your lack of power until you hit a wave...my buddy had the same problem and we swapped them and it solved the problem.

Hard starts, it's running to lean, you need to tune it.

[stevepaulus]

Forgot to ask...are you hard starts when it is cold or already warmed up?

[stealthdoo]

hard starts cold & hot! thanks for the tip on the rectifier

[stevepaulus]

Were the carbs rebuilt before you put the new motor in?

[stealthdoo]

yes they been rebuild I got to K&N filters instead the original configuration

[stevepaulus]

What are your lows and highs adjusted to?

[Technical Support]

Let me guess - you put the K&N's on and did not rejet...

[stealthdoo]

lows are adjusted to 1 1/4 turn I follow step by step all the adjusments i also own a challenger 1800 they have 787's engines and they run great, the only different on this beast is the K&N filters

[stevepaulus]

like tech said, did you re-jet the carbs after installing aftermarket filters?

[stealthdoo]

[img]graemlins/spit.gif[/img] nope

[stevepaulus]

Well, you found your problem.

[stealthdoo]

wish size I have to re-jet the carb's

[Technical Support]

How long have you been running with them on and the incorrect jets? If more than a few WOT passes you have probably already damaged your engine. Take a compression check right now.

Get the proper jet kit from www.watercraftmagic.com - you have been running way too lean because you put on less restrictive filters and did not add the additional fuel needed.

[stealthdoo]

I spoke with the prior owner & he told me that the carbs had been rejet. Also swap rectifiers with my challenger & still the same. Any other suggestions?