Quick fuel carb install questions

what Ken sez +1

since you had other posts about your Holley having the drips, I see you gave up on the Holley,

Did you do the things people suggested like making sure the tank and everything upstream of the pump is clean so your new carburetor doesn't come up with the same problem?

You'll get opinions both ways on the fuel line, if you go flexible you should be using USCG approved stuff It'll have USCG A1-15 for a rating and it's stamped on the hose.

It's more resistant to fire than the typical auto hose or even the Aeroquip type braided hose.

You'll get opinions on regulator and gauge setups too.

Myself I'd use a gauge as a temporary thing to troubleshoot and you shouldn't need a regulator with a pump that puts out around 5 to 7 psi, but some people seem to lower their pressure to 3 psi or so as their cure to things like the "drips". Some other people might call that a band aid fix.

fuel line

Keno, I finall got the holley running late yesterday while I was waiting for my M-600 to arrive. I haven't given up. My brain won't let me no matter how much I want to.

I ended up checking the fuel filter and the fuel pump. I measured discharge pressure of 7psi so I ruled it out. Disassembled the carb and cleaned it all again. Pulled the PV and tested it since I had the backfire. I removed the old needle/seat assembly and installed the new one that came in the kit. The new one was a little different dimensionally. I mic'd the needle and the new one was .014" shorter than the old one. The new seat was .019" shorter than the old one. I adjusted the float a few times to compensate for the difference in the needle/seat assembly and finally got it where it was operating much better (not dripping during idle). It still has a little drip once I shut the boat off but its pretty minimal. The boat ran well with noticeably better throttle response throughout the RPM range up to about 4k. It would restart with a single turn of the key which was very uncommon before. No pumping the throttle and multiple start attempts. Not anything like it was before.

At this point, I have had so many issues I just don't really trust the boat. It'll run well for a few outings and then out of nowhere it'll have some issue. I figure the M-600 will at least make it much easier to adjust the floats if needed without taking the primary bowl all the way off.

When I bought the M-600, I also bought a new Ignitor II EI module and the corresponding 0.6ohm/45kV coil to replace the current setup (Ignitor I / 0.8ohm/40kV coil) but I realized that I ordered an oil filled coil and not an epoxy one so I sent it back today.

My plan is to run the boat as-is for the remainder of the season and rebuild the holley completely over the winter when I have some spare time. I will also install the M-600 and probably the new Ignitor II module and epoxy filled coil at that time. Then I will have a spare carb, EI module and coil standing by. Usually for me, if I'm prepared for everything, nothing happens. Fingers crossed!

Thanks Scootdog!

cbr1000dude wrote: I guess I'm the "bandaid" guy that lowered his FP to 3 psi to make my Holley quit dripping after shut off, and it still works fine thank you.

You did come to mind, but don't feel like the Lone Ranger

I seem to remember he tried float adjustments, it works for him with reduced pressure and like I mentioned, others do it too so why worry about it.

Like he said, it works just fine for him

When I put my 4 bbl on I got the same degree wedge that HM used on their 2 bbl. You can see here how it looks. When I transfered this carb to my PCM with no wedge I had to do more adjusting than I thought .