Reply
 
Thread Tools Search this Thread
 
Old 03 March 2007, 18:36   #11
Member
 
Country: UK - Scotland
Make: Ribcraft
Length: 5m +
Engine: 90hp
Join Date: Aug 2006
Posts: 380
Quote:
Originally Posted by AndrewH View Post
You didn't get your fuel from Tescos or Morrison did you?
Unfotunately not - I'd be quite pleased if this was the cause as at least I'd know what was causing it:-)

Got out in the boat today and confirmed that it ran OK with a small aux tank connected directly to the engine - WOT for 10 mins no probs. With the main tank connected, the engine dies after a minute at WOT.

So, I don't really know if that helps narrow it down. I'll need to go out with someone else (other than the wife who was holding the children) on a calm day to see if the primer bulk is going flat - it's inside the console and would require sitting in the bow to see it - not easy if your driving.

I had a good look at the connector and the o-ring is OK - changing the connector didn't seem to help (I broke the old one a few weeks ago...)

Has anyone had any issues with fuel hose flattening? It's TEMPO fuel hose (internal 3/8 diam) and seems quite soft to me. It's new and the guy I got it from assured me it was the latest spec stuff. I had TEMPO hose on my last RIB but it was braided and seemed a lot more solid. Was wondering if this would be a possible problem. The fuel hose is inside a conduit pretty much all the way from the fuel filter to the engine so it can't get squashed by any other cables, hoses etc.
__________________

__________________
al40 is offline   Reply With Quote
Old 03 March 2007, 20:07   #12
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,855
Ditch the Tempo fuel line or rather the primer bulbs. Their Bulbs are crap, I think the one way valves are stiff and restrict the amount of fuel getting though hence your fuel starvation. Buy a decent one. Quicksilver do some that are good.
__________________

__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 04 March 2007, 18:17   #13
Member
 
Country: UK - Scotland
Make: Ribcraft
Length: 5m +
Engine: 90hp
Join Date: Aug 2006
Posts: 380
Quote:
Originally Posted by Hightower View Post
Ditch the Tempo fuel line or rather the primer bulbs. Their Bulbs are crap, I think the one way valves are stiff and restrict the amount of fuel getting though hence your fuel starvation. Buy a decent one. Quicksilver do some that are good.
Hi Hightower,

I don't think it's a tempo bulb - I bought the tube off a drum and got the bulb seperately but in any case I can certainly check with another bulb (like the one from my original tohatsu fuel line).

Good call - I hadn't thought about that and depending on what valve it is and relative position in the bulb, it may not even show with the bulb flattening!
__________________
al40 is offline   Reply With Quote
Old 07 March 2007, 12:04   #14
Member
 
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
I'll reiterate my experience with a replacement Tempo fuel line for my 14' Achilles/40-4 Honda:

Developed a leak at the motor fuel connection, so bought a new Tempo fuel line: Hoses (2), primer bulb, and 2 connectors (one for the fuel tank and one for the motor; both spec'd for my particular application.) Put it all on, and had the following problems:

1) Fuel tank connection would fall off if you looked at it wrong. Replaced with connector off the old fuel line.

2) Motor connection would fall of if touched. Re-shaped the SS locking clip, and filed a larger cutout into it to get a better grip on the locking pin.

3) Primer bulb would pump once, but would stay flat. Initially suspected that the dry-break connectors were never getting past the "dry" part; but in troubleshooting, found that after removing the bulb completely from the line, it operated the same way. The thing wouldn't even pump air. Replaced with the OEM Honda bulb from the old line, and everything worked fine after that.

No more Tempo crap for me.

jky
__________________
jyasaki is offline   Reply With Quote
Old 07 March 2007, 13:18   #15
Member
 
Country: UK - Scotland
Make: Ribcraft
Length: 5m +
Engine: 90hp
Join Date: Aug 2006
Posts: 380
The concesus seems to be Tempo stuff is no good.

What are the suggestions for a good make of fuel hose (and where to get it)? I need approx 5m of just fuel hose, pref braided and a primer bulb. To be honest the fuel hose itself does look OK (seeing as it's just hose), it's quite soft but I can't see it flattening that easily.

Hightower has already suggested a Quicksilver primer bulb. Everywhere I look the Tempo ultraflow seem to be present claiming 35% more flow that others.

Confusing!
__________________
al40 is offline   Reply With Quote
Old 07 March 2007, 13:25   #16
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
Petrol fuel hose by the length from a motor factors. It'll be reinforced too rather than the cheap rubbish which comes with outboards.
__________________
JW.
jwalker is online now   Reply With Quote
Old 08 March 2007, 11:15   #17
Member
 
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
Any chandler will have the marine rated fuel hose (which is most likely the same as your local garage will have, but with a bit more ink on the side.)

As far as the bulb, get the OEM one from a shop that represents your motor (or, in truth, any motor manufacturer - they're not really different brand to brand.)

jky
__________________
jyasaki is offline   Reply With Quote
Old 08 March 2007, 15:10   #18
Member
 
Country: UK - Scotland
Make: Ribcraft
Length: 5m +
Engine: 90hp
Join Date: Aug 2006
Posts: 380
Had an interesting coversation with Tohatsu. Basically they claim that the way the boat is rigged will not allow the engine to suck enough fuel. Fuel filter is mounted in console (like all RC's) with a short length of hose from tank to fuel filter. Then the primer bulb and long run to the engine. The tohatsu engineer claimed that because the fuel filter was just after the tank, that this made it much harder for the engine to suck fuel.

True or False?

I personally suspect that the narrow bore of 5m of hose will provide a higher resitance path than the fuel filter so it doesn't make any diff where the filter is placed. I much prefer it in the console anyway as it's out of the way and doesn't rust.

The next thing the Tohatsu engineer stated was that the cartridge type filters (ie water seperating cartridge filters) we no good and that one with a sight bowl was better.

In speaking with Ribcraft, the default filter is rated for flow rate to at least 100HP (it's a quicksilver one apparently) and they have used them on opti 150's with no problem. I don't know the micron rating of the filter, or flow rate, but I assume it must be relatively high to give adequate flow for 100HP

So 2nd question is, should I be looking to install a bowl type filter or stick with what I've got?

I've decided my next course of action is to prime the engine then effectively remove the primer bulb and fuel filter from the euqation and connect the hose direct to the fuel tap. If that runs then the hose must be OK and the problem lies somewhere in the filter or bulb.

Cheers
Al.
__________________
al40 is offline   Reply With Quote
Old 09 March 2007, 06:15   #19
Member
 
Pete7's Avatar
 
Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,850
Quote:
I've decided my next course of action is to prime the engine then effectively remove the primer bulb and fuel filter from the euqation and connect the hose direct to the fuel tap. If that runs then the hose must be OK and the problem lies somewhere in the filter or bulb. Cheers Al.
Good plan, b
__________________
.
Ribnet is best viewed on a computer of some sort
Pete7 is offline   Reply With Quote
Old 10 March 2007, 03:35   #20
RIBnet supporter
 
yoyo's Avatar
 
Country: UK - England
Town: Warrington/Anglesey
Make: Menai 480SR.
Length: 4m +
Engine: Tohatsoooooooo 70hp
Join Date: Sep 2005
Posts: 665
here is a pic of the filter/seperator and bulb setup on my Tohatsu 70.
Attached Thumbnails
Click image for larger version

Name:	P1010789.jpg
Views:	102
Size:	52.2 KB
ID:	25411  
__________________

__________________
Yoyo.
---------------------------------------------------
life's full of ups "n" downs.
yoyo is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 07:40.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.