Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
HELP! Well got everything hooked up today and cranked my Midget today for the first time since I installed the HIF44 carb. but before it cranked it was pouring fuel out the overflow so I plugged it. now it pours out the carb inlet until it cranks. so what are the options as to what is wrong and what should I do first. Bad float, stuck needle or maybe pump too strong any help would be greatly appreciated. also the car ran great after it cranked which was nice.
-
Hi Guest!
If you appreciate British Car Forum and our 25 years of supporting British car enthusiasts with technical and anicdotal information, collected from our thousands of great members, please support us with a low-cost subscription. You can become a supporting member for less than the dues of most car clubs.
There are some perks with a member upgrade!**Upgrade Now**
(PS: Subscribers don't see this gawd-aweful banner
HIF tweaking
- Thread starter alsmith
- Start date
Share this page
Luke_Healey
Jedi Trainee
Offline
The needle probably isn't seated properly.
You can check fuel pressure too though. If it's over 3.5psi I'd dial it back somehow.
My carbs do this when the bowls are empty and I'm filling them for the first time.. the fix is to pull the bowl off, fill it with gas, and put it back on slowly to get the needle to 'float' up where it's supposed to be.
You can check fuel pressure too though. If it's over 3.5psi I'd dial it back somehow.
My carbs do this when the bowls are empty and I'm filling them for the first time.. the fix is to pull the bowl off, fill it with gas, and put it back on slowly to get the needle to 'float' up where it's supposed to be.
Luke_Healey
Jedi Trainee
Offline
3psi isn't much, but it's plenty when unchecked :wink:
Hap Waldrop
Yoda
Offline
The HIF4 guys has the float bowl made into the bottom of the carb, very different than HS2 or H1s. My guess to would be a stuck needle/seat float valve as well, but you need to remember these were used on MGBs with a twin car set of and one carb carried fuel to the other, so if it has three brass tubes on the side of the carb, two are fuel supply tubes (not counting the angled smog/vent tube higher up the carb body) so you need to confirm fuel supply tubes vs vent tubes.
On the twin HIF4 MGB set up, the car's fuel supply hose was carried to the front carb, so you had two brass tube on the non linkage side of the carb, one was a fuel supply the other a vent, then on the linkage side of the fornt carb a carry over fuel supply brass tube to carry fuel to the rear carb (which has one fuel supply tube on the linakge side with a vent tube on the on the non linkage side. Thats why with a HIF4 single carb application made to fit a 1500 you would desire to have the rear carb, not the front carb. .
Al if it ends up being a neelde seat flaot vlave, call Gordon at The B Hive in Clemson www.thebhive.com, and ask him for a viton tip needle seat valve, and save yourself soem grief, also i would recommend submerge checking the float to make sure it not taking on fuel.
On the twin HIF4 MGB set up, the car's fuel supply hose was carried to the front carb, so you had two brass tube on the non linkage side of the carb, one was a fuel supply the other a vent, then on the linkage side of the fornt carb a carry over fuel supply brass tube to carry fuel to the rear carb (which has one fuel supply tube on the linakge side with a vent tube on the on the non linkage side. Thats why with a HIF4 single carb application made to fit a 1500 you would desire to have the rear carb, not the front carb. .
Al if it ends up being a neelde seat flaot vlave, call Gordon at The B Hive in Clemson www.thebhive.com, and ask him for a viton tip needle seat valve, and save yourself soem grief, also i would recommend submerge checking the float to make sure it not taking on fuel.
G
Guest
Guest
Guest
Offline
v8mgbal said:
I've had a few of those stick on me, up in the seat. The tip was worn from vibration/pressure and jammed up in better than you would think. The thing that sucks is, once it does that, you can't just tap on the side of the carb to free it.
I like them ol' fasun metel need'les.