Thank you that is exactly what i was looking for! I was calling the jets the wrong thing. The jets are at the bottom of the bowl and that is what the fuel goes through which transfers the fuel out the nozzles. I was calling the nozzles the jets
No need for a new carb just clean and rebuild yours. places like mikes carb parts have rebuild kits (gaskets needle seat and accelerator pump). If this carb only worked 3-4 times then had issues you have fuel system contamination , buy a new carb and its passages will be plugged soon too. Need to clean out tank and lines of sediment and if you have a fuel filter it isnt workingThank you that is exactly what i was looking for! I was calling the jets the wrong thing. The jets are at the bottom of the bowl and that is what the fuel goes through which transfers the fuel out the nozzles. I was calling the nozzles the jets
I will try to blow out and clear the carb, and if the boat runs good i will have to get a brand new carb. No rebuilts this time, expensive lesson learned i guess. I will also find a better timing light nearby to check what my advance is at just to at least know....
The corrosion and particulates did not come from the fuel tank they came from the carb. I know this because the same corrosion products were on the non-fuel parts of the carb as well. They stripped the nickel plating and corrosion resistant stuff off the carb after they rebuilt it. Thats why it quit working after the first time using it in the saltwater. The mechanic that cleaned my flame arrestor looked at my carb and told me the thing was bad and that he sees it all the time. People buying rebuilt carbs that only work a few times. He said to only buy new carbs or carbs that have their corrosion resistance. I cut open the inline fuel filter I installed when I installed the rebuilt carb and it was clean as a whistle.
) The timing was 12° at idle (750-800 RPMs) and 32° at ~3000-3150 RPMs. That is weird. I have never checked the timing on this engine before so I am not sure what it started out at, but it was supposed to be set correctly. I have about 100 hours on the engine since the rebuild and most of the time it has ran flawlessly. So now I am curious if the timing was correct, then all of the sudden got messed up on its own somehow, or if it has always been that way? When it had the Quadrajet carb, it was always hard to start. When I put the Edelbrock on it was easy to start, until it quit working properly then it was hard to start. Definitely a sign of too advanced timing, but really not sure what happened.
clogged exhaust is possible if an exhust shutter falls down into the wye pipe. They can make their way into the bellows and restrict exhaust. If you had the drive off recently and looked in the exhust bellows and that was clear look into the tops of the wye pipe.
I did check the fuel pressure at WOT on the lake. I think it was 6.5 PSI or so, so that checked out. Held pressure well too with the new fuel pump. The old fuel pump did not hold the pressure for very long so good thing I replaced it.
Agreed none of those compression numbers would make me think the engine needs to come apart.
Really? Even with 190 PSI as my high and 140 PSI as my low? That's a 30% difference and 50 PSI difference. I have an Edelbrock 1409 on there now. I am just going to buy a new carb just to be safe after I finally get the darned thing running. I will do a wet test on all of the cylinders tonight.
yes I suspect you have some guage accuracy issues around 150 psi is new, unless you had water or gas in the high one I suspect thats an outlier. Typically I think you start getting dead cylinders below 120 psi.
I did not verify the ignition timing, but I have no reason to believe it is off since it was running great, and then all of the sudden not without touching a thing. I will verify tonight anyway. I would not disagree that I have gauge accuracy issues, but I believe the readings in relation to each other are accurate, therefore the differences between them are accurate and precise. The highs and lows were the same between the 2 tests where I left the plugs in and engine cold with the throttle open versus the plugs out when the engine was hot with the throttle open on the 2 different days.
