New fuel pumps and still has wot surging.

[mjack7]

225 ox66 starts to surge at anything over 5000 rpm. Drops about 2 to 4 hundred in rpm then if I gun the throttle again it corrects itself for a few seconds. I have replaced the throttle cable and just this weekend the 3 fuel pumps. It seems to be alittle bit better but not 100%. One thing I have found is that it rarely surges when I have a low tank fo gas. Anything around a 1/4 of a tank. Tournament blast offs with 55gallons really sucks when your doing 55mph. Motor is on a 210 skeeter year 98.

Any thoughts would be appreciated.

[21XDC]

Fuel primer bulb or O2 sensor?

[mjack7]

Primer bulp was replaced recently aswell. Did a search on the o2 sensor. Guess thats where I'll have to look into next. Where is it located and what does it look like.

[dallasdawg]

I had surging problem with similar symptoms as yours. It turned out to be the pickup line in one of my tanks was too long and would restrict flow when fuel was mostly coming from that tank.

Don't know if that is your issue, but it is real easy to check.