ueww40
Member
I just got through rebuilding the dual carbs on my 1994 GTX and I must admit, it's not running well. it seems to run very well on the trailer, no sputtering, no misfiring and good throttle response. This morning I put it out in the water and I had a little difficulty getting it started, because the primer pump is not up to snuff. I squirted some gas into the carbs and it started. But here is what it does: It idles fine I would say. At first it did not want to accelerate when I pulled the throttle, but wanted to stall. After several restarts and careful manipulation of the throttle I finally got it to go into higher RPM doing about 15 miles/hr and then I went to WOT, but the RPM did NOT increase. I was cruising along in WOT doing about 15 miles/h. Engine acted just fine, no misfiring, sputtering, coughing etc. It acted like I was running on half throttle, even though I was doing WOT. Without doing anything else, cruising along at 15 miles/h throttle wide open, about a minute later or sometimes 2 all of a sudden, the RPM starts to pick up and I am doing 30-35 miles/h. and would continue to do so for as long as I don't let up on the throttle. The minute I let the throttle go and then I go back WOT again the same thing repeats. I cruise along at 15 and then a few minutes later it goes into high gear again. I did this for a couple of hours, thinking that everything needs to be exercised and broken in but in the end it would not rev up anymore. It stayed at around 15 miles/h until I turned the engine off. The 15 mile speed is very steady, no pulsating, it almost feels like a speed limiter is keeping it there. I must also add that the doo did not run for 3 years because of other issues, which are all fixed now. There was about a gallon or less of old gas in the tank which was treated before storage. I did treat it again this time and added 3 gallons of fresh 89 octane non-ethanol marine gas to it. I don't think the gas has anything to do with this, but you tell me.
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