A fuel pressure gauge would be ideal for fault finding for this mate. I've been suffering the same with my Montego I've just put back on the road. Fuel tank was full of floating rust crap which once dragged enough to the pick up pipe filter starved the carb.
Mines currently taped to the front screen as I'm not keen on piping fuel into the interior!!
I’ll get one ordered and get it fitted once I’m once I’m back from work again!
The issue you found, could possibly be what’s causing mine, like I say, it’s an old tank, and if it’s only once it’s had time to drag up all the crap, then it could well be the issue. I’ll get a gauge ordered! I really should have done it in the first place haha
I was meant to take the rallye to this show, but pulled out last minute due to a trip away I had planned and not being able to get in the hall on time. Wish I had still made the trip down for the day, looked like a lot of seriously nice cars to have had a look round
Hey guys, been a busy few weeks and barely had time to look at the forum The fuel pump that was on, was dribbling out, worked out it was doing 7.2ltrs/hr so I fitted one of the huco pumps mentioned above Seemed to have a better flow, great out, a run, seemed fine, but as usual, 10 minutes into the drive it sitting about 45/50 it started kangerooing, no revs like it was starved of fuel, but didn’t cut out this time.
Pulled over at the side of the road, sat for 5-10 minutes then it drove home with just an odd hiccup, starting to wonder if it’s maybe the carb needing a tune up?
Only other thing I’m starting to question, is with it being a 31 year old fuel tank could it be full of sh*t or the pick up pipe rotten inside....
Finally home from work, gave the bay a quick look over today to make sure everything looked like it was going to the right place on the carb. All seems fine so going to see what sort of flow rate I’m getting out the pump tomorrow and take it from there....
Hi, If you're going to be off roading then have it at the tank end because it easier for any pump to push the than to pull, especially if your driving up a hill that's the last place you want to lose power.
That’s a very fair point and makes the decision easy
Your probably wasting your time changing the pump assuming it is actually pumping well. A regulator is a good idea but the problem your having doesn't sound like it's being caused by excess fuel pressure anyway. If you did have excess pressure it would force open the float valve and flood the engine at idle but sounds like you have more of a fuel starvation issue here.
It could be so many things it's hard to say.
Maybe worth measuring what sort of flow rate I’m getting from the pump fitted at the moment then before I buy a new pump?
Could vacuum advance be causing the issue? Or rather lack of....
I suspect your mate is so used to using 2K paint that he didn't see that aspect as an issue and just recommended HS as it's his favoured type of 2K. Could be wrong but most pros use 2K and a lot of them say 'I don't bother with all that airfed mask business' which sort of brings us full circle.
Put it this way if I'd been there at the time I'd have said 'you mean HS 2K paint? you do know keyring hasn't got an airfed mask?'
That might not have went down well lol.
I'm my experience the only 1K paint that takes ages to dry is synthetic enamel, which is like tractor/machinery paint, and I don't imaging that's what you're after.
If you use 'normal' spray paint like cellulose/celly/acrylic it dries almost instantly and can be used with a good face mask like 3M or something.
I must admit I've never seen celly offered in MS or HS. I thought this nomenclature only came in with 2K paint
That may well be the case when he recommended it! I do fancy trying my hand at painting, even if it was just the engine bay. The mk2 does need a respray, and I’d love to do it myself but when putting the sensible head on, it’s maybe not the best idea
I think giving the engine bay a go first is the way to go, would hate to then have to strip it l; back off and get it done properly again!
Hi, A number of members on the Classic Rover forum use Huco 13 3010 pumps an SU derivative, can move enough fuel to supply the V8 but a low enough pressure to not overcome the float valve. The same as the SU some are pullers and some pushers.
@1300's Dolly's suggestion the same as mine ; to get an SU derived pump. I'll see if I can dig out a link. The main reasons are:
-They are designed to work with SUs and their lower pressures. -The above eliminates the need for a regulator in most cases -They are only really audible when they do not have a head of fuel. Otherwise you can barely tell that they are there.
I had a Stag version which even managed to work fine with my Holley 4 Barrel on the Stag.
That sounds the way to go, when it will also save me the money of buying a fpr I’ll have a look on google, but if you have a link for one that would be awesome!
My one of those was working but weak. When I pulled it out of storage it was broken completely. Is yours Gold?
If it is working it would certainly need an FPR on it as suggested.
I’m sure it is gold. So assuming it’s working correctly it does needs a regulator, however if it’s not working correctly or is mounted at the wrong end of the carthen that could explain the starvation at higher revs?
I’ll maybe look into a new pump too, with this one having not cost me anything anyway I always wonder as well if the facet one I got for free is designed to be mounted in the engine bay rather than just above the tank, where I have it currently!
Some investigation to do once I’m home from work I think
Which model of Facet is it fed by and how old is it?
If it were me I'd buy an SU specific pump. I've never had an issue with an SU pump, but they may be seen as pricey. I undertand many have been fine with the alternative type SU pumps which are widely available for around £30-40. They also self regulate and work to the pressure designed for SUs, something most Facets are a little over.
Have you checked the pressure of your fuel pump as well as the flow rate?
I'd need to check what model it is, but I dare say it's a few years old now! I got it as a freebie from a friend that used to have it on a stock car
I had been looking at su pumps today, and wondered if they would be a noticeable difference when ran with an su carb...
That was another thing I was going to ask, if a fuel pressure gauge was worth a buy?
Currently got a su hif44 on my Suzuki sj(vitara 1.6 8v engine), which is fed by a low pressure facet pump
Pottering about it seems fine, but when I've got the foot down, it starts to splitter and I get no revs at all, it will then cut out, but will start again on the push button
The carb was overhauled and rebuilt using the correct spring and jet recommended on the sj forum, which leads me to ask, could it be the fuel pump causing these issues, or does it sound more like the carb needs properly tuned?
I've used a fair few of them, and they're pretty damn good. I use a standard 240v heat gun (manly hairdryer kinda thing) with a fairly small tip on it, and as long as you're careful where the excess heat goes, all is good
Perfect, going to stock up on some for the toolbox, they would like they could be better than crimps