Can't get full Throttle
Submitted by Didzy on Wed, 2014-04-09 12:11
Gday Fellas
Got another problem that I'm sure one of you will know the answer to!!
Was out on the water yesterday had no dramas til I was about 20kms out and the engine
started to struggle!! I immediately thought it was bad fuel and inspected the water trap filter that
runs between fuel tank and engine and the bottom of it was full of shit!! I drained it connected back up and tried priming it but the primer wouldn't pump til it was hard!! Got it started and putted back in at 7 knots but yeah to me it's like there's a block in fuel line between primer and tank!!
Does this sound right??
Cheers Didz
____________________________________________________________________________
4 days on 4 days off equates to 4 days work and 4 days fishing
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sea-kem
Posts: 14933
Date Joined: 30/11/09
Sounds like it's struggling
Sounds like it's struggling for air. I'd be giving the whole lot a flush and tank inspection too.
Love the West!
Didzy
Posts: 33
Date Joined: 19/05/13
Forgot to mention when I got
Forgot to mention when I got home it primed and run fine!! I could open her up no worries but still the primer pump wouldn't pump til it was hard!!
4 days on 4 days off equates to 4 days work and 4 days fishing
Rob H
Posts: 5786
Date Joined: 18/01/12
could easily be blocked, but
could easily be blocked, but also the primer bulbs are very prone to failure with the valves in each end failing.
A cheap spare to carry but at a pinch you can do the following if its just the bulb.
1/ Kink the fuel line before the tank, squeeze the bulb.
2/ kink it after the bulb and release
3/ keep doing that to get fuel up.
This will get fuel moving up the line and has saved me in the past, most boats with built in tanks are much lower than the engine so need a fair but to get the fuel up.
You can also remove the bulb and blow back into the tank to move a blockage but still needs cleaning out.
But regardless Id do what Seakem suggests either way.
Give a man a mask, and he'll show you his true face...
The older you get the more you realize that no one has a f++king clue what they're doing.
Everyone's just winging it.
Didzy
Posts: 33
Date Joined: 19/05/13
Yeah it's bellow floor tank
Yeah it's bellow floor tank on a trailcraft so it has the sealed floor so don't really wanna remove it until it's a last resort!!
Cheers for advice fellas!!!
4 days on 4 days off equates to 4 days work and 4 days fishing
Rob H
Posts: 5786
Date Joined: 18/01/12
if your Trailcraft is a few
if your Trailcraft is a few years old look closely at the rivets holding the fuel tank cover (soft patch) on.
Mine would gather rainwater and eventually found the rivets were failing.
The rivets are quite heavy duty so if you remove you'll probably need more than the average pop rivet gun to refit it, I used a concertina one.
Give a man a mask, and he'll show you his true face...
The older you get the more you realize that no one has a f++king clue what they're doing.
Everyone's just winging it.
Didzy
Posts: 33
Date Joined: 19/05/13
Must be block in line!!
Must be block in line!! Hooked existing line and bulb from filter to jerry can and
it pumps hard!! Looks like I'll be ripping tank out!!
4 days on 4 days off equates to 4 days work and 4 days fishing
slugger
Posts: 160
Date Joined: 17/02/11
have you checked fuel filter
if you had shit in the fuel, it will get sucked thru and clog the filter up
for the price, i would chuck a new one in and try that first
bear1952
Posts: 6
Date Joined: 13/12/11
Mine was a blocked carby jet
Had a Yamaha o/board that used to do this occasionaly. It would rev no probs in neutral, but when in gear would only go to "limp mode". Turned out to be a blocked carby jet. That's what it sounds like to me anyway.
FISHLESS
Didzy
Posts: 33
Date Joined: 19/05/13
Hopefully not blocked
Hopefully not blocked jet!!
What would be procedure to unblock??
4 days on 4 days off equates to 4 days work and 4 days fishing
dodgy
Posts: 4575
Date Joined: 01/02/10
Trailcraft is the main clue
Trailcraft is the main clue here I think. The older trailcrafts used the quicksilver fuel line that had massive problems with the material breaking down and blocking the fuel lines. The internals of the fuel line turns to mush and causes all kinds of trouble.
Does anyone know where the love of god goes, when the waves turn the minutes to hours?
holth
Posts: 812
Date Joined: 09/10/06
+ one on what dodgy said.
+ one on what dodgy said. changed mine over on my traily from the tank last year. removing tank isnt hard.
Didzy
Posts: 33
Date Joined: 19/05/13
Yeah right!!!Oh well tanks
Yeah right!!!
Oh well tanks comin out and lines by the look of it!!
they were replaced about 5 years ago but by sounds of it have to be done again!!!
4 days on 4 days off equates to 4 days work and 4 days fishing
Akers67
Posts: 29
Date Joined: 23/01/14
Process of elimination
I had same problem with my 70hp johno, changed filters, lines, fuel, checked electrics in the end the carbi got striped down to find a blockage. The culprit was some rubber from old fuel lines which we replaced anyway. Your problem could be anything, it Will be a process of elimination, hopefully it the first few things that get checked.
fish200red
Posts: 55
Date Joined: 06/02/11
motor miss
i have a yamaha 4 stroke that had a similar problem.it turned out that when the fuel tank sender unit was replaced they used a silastic that was affected by petrol and went to a slimey jelly an blocked my fuel lines .It was amazing how a little amount of silastic expandind when exposed to petrol
Mattyb84
Posts: 388
Date Joined: 28/12/12
My old job no used to do the
My old job no used to do the same thing. It was the bulb under the carny used to get blocked with shot just drop the bung out from under it and spray heaps of carbi cleaner in there and see what comes out
Pgfc member
Didzy
Posts: 33
Date Joined: 19/05/13
Cheers FellasIll let ya know
Cheers Fellas
Ill let ya know how I go!!
4 days on 4 days off equates to 4 days work and 4 days fishing
Dhuvinile
Posts: 228
Date Joined: 13/05/12
Just take it to a mechanic,
Just take it to a mechanic, your times probably not worth the effort.
if you located near mandurah go see Mark down at the Portbouvard marina.