Recirc valves

[racerone]

I say that the 90 PSI compression is too low !!------Next simple " no money spent " test for you to try.------Remove cover for the air box.-----Launch the boat.------Use a STRONG flashlight and observe / compare fuel coming up the main nozzle in each throat as you accelerate.----What boat is it on and what pitch prop do you have ?----Would not be the first time that somebody used a prop with too much pitch !

 

[Stevebandl]

My boat is an 85 Ranger 370V. I'll check the compression again with a different gauge when I get a chance. I'll have to check the prop. I'm assuming the pitch is stamped on it somewhere?

 

[racerone]

I do not know what a Ranger 370 V is or how much a 35 year old boat weighs today.

 

[Stevebandl]

It's a bass boat, Anyway if it was the prop the intermittent issue with it being slow to get on plane would be constant which as I've explained, is not. And after doing more research, I've found that low 90 compression for my motor is normal. I'm pretty sure it's either a fuel delivery issue. When it's running sluggish and I push on button in on the key to inject more fuel via the primer solenoid, it bogs down more which tells me that it's getting fuel but maybe too much or it's loading up somewhere.

 

[flyingscott]

It's a bass boat, Anyway if it was the prop the intermittent issue with it being slow to get on plane would be constant which as I've explained, is not. And after doing more research, I've found that low 90 compression for my motor is normal. I'm pretty sure it's either a fuel delivery issue. When it's running sluggish and I push on button in on the key to inject more fuel via the primer solenoid, it bogs down more which tells me that it's getting fuel but maybe too much or it's loading up somewhere.

your theory about fuel being rich or loading up is wrong. Have you looked at the timer base yet? Have you done a link and sync? Have you looked at your linkages to make.sure they are in good shape.

 

[Stevebandl]

I replaced the timer base and it moves smoothly and did the link and sync to the best of my unqualified ability. But if it were something to do with the linkage and/or setup, wouldn't that result in it running sluggishly constantly? That's what's throwing me. Once it kicks in, I can run up and down the lake all day with no issues.

 

[Stevebandl]

FYI Here are a couple of posts I pulled from the BBC boards.

"The recirc valves remove fuel puddled in the intake on that engine, if they are clogged, the engine will die when you throttle up, it pulls all the puddled fuel into the cylinders and drowns out the spark so to speak."


Post "I have a stratos FS with an Evinrude 150XP. When I take it out after I start it up, the motor wont rev up when there is a load on the engine. I can rev the motor fine, with the throtle lever. But when I go to take off it seems like it is bogging down. After a few minutes of this bogging feeling it will finally kick in and take off like normal. What do yall think is the problem"

Reply "Had the same problem with my motor. 4 of the 6 fuel recirc check valves were plugged solid. I replaced those, and she's good as new!!"

 

[flyingscott]

Sounds like you found your.problem good.luck.with that.

 

[cfauvel]

Sounds like you found your.problem good.luck.with that.

No he hasn't, he was just quoting from what he found.

if the recirc valves were clogged, they would't draw fuel from behind the carbs as the vacuum wouldn't reach the intended "sump"

If they were stuck open "maybe" it would do something negative. since on each vacuum (up) stroke it would suck from the sump, but on positive (down) stroke it would push that fuel back to the sump.

see my thread
https://forums.iboats.com/forum/engi...de-225-hp-1986

It was my understanding, maybe racerone can confirm, that the recirc valves was introduced to help burn some of that puddled fuel and help the motor re-start after it has been running for a bit, then **** down for a bit.

this statement I don't agree with
"The recirc valves remove fuel puddled in the intake on that engine, if they are clogged, the engine will die when you throttle up, it pulls all the puddled fuel into the cylinders and drowns out the spark so to speak."

 

[Stevebandl]

Thanks for the link. Very informative. Well if you've read my earlier posts you know that I have a lot to learn about outboards. I'd bet y'all were there at some point.:joyous: I have learned most of what I know from guys like you on these forums although, like in this case, sometimes I get conflicting information. I'll probably go ahead and check/clean and if necessary,replace my recirc. valves just to rule that out. Maybe they aren't causing the issue I'm assuming they're there for a reason and need to be working properly.
I also plan on doing another link and sync to make sure the setup is right. If anybody has a link to something that explains clearly how to do that I would appreciate it. The manual I have is not very clear on that. Thanks

 

[flyingscott]

No he hasn't, he was just quoting from what he found.

if the recirc valves were clogged, they would't draw fuel from behind the carbs as the vacuum wouldn't reach the intended "sump"

If they were stuck open "maybe" it would do something negative. since on each vacuum (up) stroke it would suck from the sump, but on positive (down) stroke it would push that fuel back to the sump.

see my thread
https://forums.iboats.com/forum/engi...de-225-hp-1986

It was my understanding, maybe racerone can confirm, that the recirc valves was introduced to help burn some of that puddled fuel and help the motor re-start after it has been running for a bit, then **** down for a bit.

this statement I don't agree with
"The recirc valves remove fuel puddled in the intake on that engine, if they are clogged, the engine will die when you throttle up, it pulls all the puddled fuel into the cylinders and drowns out the spark so to speak."

No sh@t really!!

 

[cfauvel]

No sh@t really!!

you really need to add a qualifier like (sarcasm) to the end of sentences when you are being sarcastic...

ie

"Sounds like you found your.problem good.luck.with that.(sarcasm)"

 

[cfauvel]

Thanks for the link. Very informative. Well if you've read my earlier posts you know that I have a lot to learn about outboards. I'd bet y'all were there at some point.:joyous: I have learned most of what I know from guys like you on these forums although, like in this case, sometimes I get conflicting information. I'll probably go ahead and check/clean and if necessary,replace my recirc. valves just to rule that out. Maybe they aren't causing the issue I'm assuming they're there for a reason and need to be working properly.
I also plan on doing another link and sync to make sure the setup is right. If anybody has a link to something that explains clearly how to do that I would appreciate it. The manual I have is not very clear on that. Thanks

quite honestly , I didn't find much of a difference when I got all new recirc valves and unclogged the nipples at the base of the pistons..

The manual states it could have hard re-starting issues...I saw that when they were clogged and when they were unclogged...for me the nature of my beast...

I'm OCD at times and want everything on my motor working as it was 34 years ago...so I get where you are coming from.