choosing the right kit

[day tripper4]

Hello all ive got a 81 glastron with 350ci 260hp merc (5834119) with a Qjet 17059288 that i beleive to have leaking plugs. I am planing on pulling the carb to jb weld them and see if it has a brass float. I have been looking at carb kits and cant decide what to get as they all seem to include different things. what should I be looking for in addition to kit, in carb filter, and float? Do I need jets, pick up tubes, thicker spacer and other things not included. please share your experiance, and all the advice you can give.
Who makes a good product?
Also need to do the rest of the tune up stuff. Is there a specific order I should do things in?
Start at points and end with timing? And doing what all in between?


Found this web page is this a good kit?

http://quadrajetparts.com/rochester...quadrajet-rebuild-kit-marine-q4016-p-415.html

 

[Don S]

Re: choosing the right kit

Does the engine run? If so, run it for a bit and get things moving and running. Then pull your spark plugs and do a proper compression test.

View attachment 97-25 Compression Test.pdf

Not much sense in rebuilding the carb and doing a tuneup if the compression isn't any good.

On your tuneup, when you do the points check the dwell after you get it running make sure it's correct. Then set the timing to the correct spec at IDLE (650-700 rpm). Then adjust the carb idle mixture and idle speed. Also check the advance timing to make sure the advance weights are moving.

 

[day tripper4]

Re: choosing the right kit

Yes the engine runs well once I get it started. When I cold start will I have to crank 8 seconds for mechanical pump to refill carb then pump the throttle 3 times and maybe it will start Is this correct procedure?
as a last resort will pour gas in to it.
Have seen compresson tester at Harbor Freight as I'm a cheapskate but have never used one before, I get it running pull wire and plug screw in tester and record pressure for each, correct?
I will do this next week after pay day and get back to you.
Thanks Don S. have read many of your posts and have much respect for your wealth of knowledge.

 

[Don S]

Re: choosing the right kit

When I cold start will I have to crank 8 seconds for mechanical pump to refill carb then pump the throttle 3 times and maybe it will start Is this correct procedure?

Not sure if 8 seconds will do it, never timed one. Just pour some gas in to start with and save your starter. May take a couple tries, but it'll go.

 

[Oshkosh1]

Re: choosing the right kit

Have seen compresson tester at Harbor Freight as I'm a cheapskate but have never used one before, I get it running pull wire and plug screw in tester and record pressure for each, correct?

Run it for a couple of minutes prior to testing...

Don't worry about the HFT gauge. I had a Snap-on prior to my son escaping with it when he moved out...so I bought the same one to use occasionally. Disconnect the cap-coil wire and ground it(I use the carb post), thread the tester in(use the "extension" if need be)crank it over 8-10 times each cylinder, watch for rapid compression build up, record the number and go to the next. Record the numbers and post them back.

I use an old BBQ sauce "squirt" bottle...put some gas in it and squirt it down the throat to prime(another Don S suggestion)

Good luck.

 

[day tripper4]

Re: choosing the right kit

Thanks, will do but not till monday. Need a pay day first to buy gauge. Also saw auto volt meter that can measure dwell and RPM, timing light and compound gauge at the store am planing on geting.
8-7
6-5
4-3
2-1
is correct numbering from inside faceing back of boat top down?

 

[Oshkosh1]

Re: choosing the right kit

While you're waiting...
Download THIS...http://boatinfo.no/lib/mercruiser/manuals/mercruiser4.html#/0

It should answer many of your questions and prove to be exceedingly useful.

 

[Don S]

Re: choosing the right kit

.

 

[Grub54891]

Re: choosing the right kit

Uuuummmm.... Just what plug's are you trying to jb weld? I've never had to jb anything on lot's of carb's? If it need's jb then it's more than likely shot!
Grub

 

[Don S]

Re: choosing the right kit

Uuuummmm.... Just what plug's are you trying to jb weld? I've never had to jb anything on lot's of carb's? If it need's jb then it's more than likely shot!
Grub

Well plugs on a QJet. It's a common practice to epoxy them to stop leaks.

 

[day tripper4]

Re: choosing the right kit

Havent forgot about this work has been crazy. planing on doing compresson test toningt. someone said "Disconnect the cap-coil wire and ground" im not 100% on wich one this is have looked at a few wiring diagrams but cant seem to picture where it will be on my engine. The object here is to deenergize distributor but not the starter correct? And I should remove and label wires and plugs all at once, or one at a time as I check each cylinder?

 

[Don S]

Re: choosing the right kit

Pull the coil wire out of the center of the distributor cap, and put it against a ground. It prevents sparks which could ignite any fuel vapors, and it could keep you from getting shocked if you get near one of the plug wires.