Driveability issues

[Taylor Jet]

New to Jets and forum. I have a '76 Taylor SS w/ 460BBF/ Berk. 12JF. The boat ran poorly when I got it. So I changed the cam to Comp 268H, Performer RPM intake, Demon 850 DP, Holley Electric pump, And Proform HEI for Ford. It ran perfect for two consecutive weekends, but now it runs bad. This past weekend it would not idle, so I turned the idle screws a half turn each (not the mixture screws) to get it to idle. Once on the water it was somewhat down on power and stumbling at WOT. It ran hotter than usual 200 at idle, up from normal 170-180. There are no vacuum leaks, it is getting fuel. It left the water running like a champ, and went back in like a turd. Any ideas would help.

[kraig]

Ignition.

[Taylor Jet]

What leads you to that conclusion?

[kraig]

Same issue's. Went to check timing and #1 was intermentant. Got a new Accel Billit and those problems went away. Just my .02 :)

[sleekcrafter]

Check for water contamination in the fuel, and also check for water/mosture in the distributor cap.
Sleek

[kraig]

Good call sleekcrafter, yes I would check that first....it's free!!

[slotracer]

my sons boat did the same thing ran great last time out. then started to run like crap. installed a new ready to run msd dist. still ran bad. people said everything from bad gas to flat cam lobe. installed a new blaster II coil all is good now :)

[cfrancis]

Taylor jet we are having a Taylor Jet boat get-together on Lake Ouachita in Arkansas Aug. 10,11,12 at Brady Mountain.
There will be at least 20 Taylors there.
Come join in.....
For details: www.taylorjetboats.com

[cfrancis]

Talk with Impatient 1 on this board, he can make a 460 really go, great guy very helpful! He also has a Taylor.

[Keithb87]

Power valves?

[kraig]

Taylor Jet, just check and double check EVERYTHING.

[jetboat]

like cfrancis said,impatient1 does know whats up! i know,he got mine going just fine.so what your problems sounds like were some of mine,so use his advise,it works.

[IMPATIENT 1]

i'd have to hear it run to really help.could be quite a few things that could make it run that way.i'd start lookin at ignition first like kraig says, then fuel system, from there i'd be wondering if it has good spring seat pressure.the cam you installed might not operate correctly if the springs don't match or are weak.

[RumRunner]

If it ran fine, then the problem started is could be one of a few things:
- Ignition moved on you. Pretty simple to check.
- Got some dirt or crap in the carb (clean her out)
- A bowl screw may have loosened up (Tighten up everything before changing any parts)
- Check your valve lash as well.

[STRETCH]

:hammer2: Taylor Jet, just check and double check EVERYTHING.
Quite possibly the best post I've read this week! :rollside:

[STRETCH]

I had similiar problems, turned out to be an old feul filter and lotsa water in the lines...had to re-seal the filler necks.

[rerfert]

New to Jets and forum. I have a '76 Taylor SS w/ 460BBF/ Berk. 12JF. The boat ran poorly when I got it. So I changed the cam to Comp 268H, Performer RPM intake, Demon 850 DP, Holley Electric pump, And Proform HEI for Ford. It ran perfect for two consecutive weekends, but now it runs bad. This past weekend it would not idle, so I turned the idle screws a half turn each (not the mixture screws) to get it to idle. Once on the water it was somewhat down on power and stumbling at WOT. It ran hotter than usual 200 at idle, up from normal 170-180. There are no vacuum leaks, it is getting fuel. It left the water running like a champ, and went back in like a turd. Any ideas would help.
Did you Re-torque the intake??

[IMPATIENT 1]

sounds like a headgasket went, back off the rocker arms and charge the cylinders up with air and see if valves leak, blown to the next cylinder over or to the coolant passages.

[Legal Chemistry]

I had a similar problem, and just as Strech said: water in the fuel/water seperator (also a host of other issues.) Mine was full, so at WOT it would clog up and not allow enough fuel through. Also you could be running really lean and therefore hot. just my uneducated $0.02