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queezed the bulb,empty,pumping it improved the idle to normal.
A google tells me these bulbs dont necesarily stay hard in use.
Im banking on the one way valve within the draw tube of the tank pick up is sticking partially closed.
I dealt with this just a few months ago.
I fixed it by gutting the draw tube of the one way ball valve and installing a primer bulb right down at the tank.
Steve
I suspect that you may be picking up foreign material in the tank which is sucked up onto the fuel suction pipe causing a flow restriction. I had this problem with an earlier boat and resolved the problem when I fitted a new under floor tank. Internal inspection of the original tank revealed pieces of plastic in the tank.
Prior to the tank replacement I went through the same process as you have described, check vents, new filter, new primer bulb etc.
I hope that you resolve your issues promptly.
I have just been doing some fault finding on the boat,nothing obvious except the sender is cactus.Whataver sits on the bottom of the stem is gone,when I removed the sender the float slid off the stem so the bits are in the tank(float slides up and down,not a lever type).Fuel tank is quite full,perhaps 50mm from top,its a 200mm deep tank.
Tank is clean,small amounts of drill swarth visible,cannot see any water beads,only able to see the centre section due to baffles.
There is no backflow valve at the tank,the pickup straw exits from the top side.Can blow air in with ease,no restriction.I doubt there is a gauze on the pickup as there is no acsess to the straw inside the tank and it cant be seen due to the baffle.
I pressurized the fuel line from the tank to the motor,holds 30psi so no air leaks at all.After removing the pressure at the tank the primer bulb was still holding pressure so its OK.
Blew air from bulb fitting into tank,no obstruction it seems,interestingly it primed very easily after,obstruction now cleared???.
Will be ordering new filters,gauge/sender today.Awaiting arrival of 12V pump to circulate fuel thru the system then empty the tank.
Thoughts are to now empty the tank to retrieve float and the bit missing from the stem and ensure there is nothing else hiding in behind the baffles.If I cant find a sender with fuel pickup is it worth making my own pickup adjacent to the sender???? Clearance between tank and floor is limited.
Any more ideas most welcome.
Cheers
Andrew
On the right path I think!!!
Interesting today I back blew the lines in my Cat, replaced the Racor elements and then fitted new hoses and primer bulbs and lines...
Motors run much nicer now...
Pumped my tank out with a 12v fuel pump this arvo.Put the pump at the bulb,emptied the tank with no issue.
I need to calibrate the Lowrance fuel flow sensor,100lts in only 80lts out.I tried but must be a nuffie as I couldnt get the calibrate screen up,only the info screen on how to do it:mad::mad::mad::mad::mad:
My boy didnt complain,got a free full tank of PULP in his XR6:):):):)
Trip to the city tommorow,trying to source a pickup or parts to make one.Want to pull the tank and replace sun/mon
Andrew
Went to the city today.
First stop was the boat mechanic that fixes my boat.No help at all,not the first time I have had no confidence in what he says.Told me there is no way of fitting a new pickup without welding it.Didnt have any bits to help me,also told me he thinks its electrical/electronics.Last time I ever visit his empourium!!!!
Boat shop 2.Yes it is possible to fit a pickup,unfortunately non in stock,they get them made up.Told me he could post one down tue/wed.He will get my bussines from now on,most helpfull older chap.Whinged about olde mate down the road,he laughed.Heard it all before he said.
Went to Pirtek,most helpful.Told him what I wanted,no problems he said, made one up for $54.00.I got home and Lindsay machined the centre out of the old fuel sender for me on his lathe.All I need to do is trim the straw length and its ready to fit:cool::cool::cool::cool::cool::cool:
https://www.aulro.com/afvb/images/im...014/01/267.jpg
Andrew
Good stuff. I guess trying to find a good boat mech is like finding a good LR mech.
Hope this works for you. Is your son able to work the electronics for you. Most of the "young guns" seem to be a wizz with electric gadgetries :eek:
Glad to see it's coming together.
Great job Andy...
When you trim the pick up cut it at an angle to reduce blockage potential...
You'll be back in action in no time!
I think I have had a win:cool::cool::cool::cool::cool::cool::cool::cool :
Only 2 items in the tank.The float that fell off when I first removed the sender,so not an issue in the problem.However the missing bit of the sender I believe was the issue,it was stuck under the pickup!!!!!
https://www.aulro.com/afvb/images/im...014/01/253.jpg
https://www.aulro.com/afvb/images/im...014/01/254.jpg
https://www.aulro.com/afvb/images/im...014/01/255.jpg
Now the tank is out and I can see inside a bit better,it turns out the exsisting pickup is routed to the bottom rear of the tank,the lowest point,hence that plastic disc making its way to the pickup what I believe on each occasion the motor has played up.Now,if I fit the new pickup my fuel line is too short and will require a joiner.Im thinking use a T piece and use both pickups.
Thoughts?????
Andrew