• Hi Guest! Being a Paying Supporter is NOT a requirement to participate at BCF. However, subscribing will help ensure we can continue to serve the LBC community for years to come. If you enjoy BCF and find our forum a useful resource...Please consider supporting us by **Upgrading**
    (PS: Subscribers don't see this banner)
Tips
Tips

69 E-Type sputters when making left hand turn

DonJ

Freshman Member
Offline
I have a 1969 E-Type roadster. The last time we took it out for a ride I noticed on the way home that on 3 occasions when making a left hand turn the engine would stutter momentarily, only a second or two, while making a left hand turn. I took it into my mechanic for some other issues and mentioned this to him. I got a phone call from him today and he said they took it out for a ride and yes, the same thing happened to them. He mentioned that is seemed more pronounced with up-hill lefts. I am wondering if it could be the first signs of a fuel pump going bad, but I have no idea why left hand turns. The mechanic will check fuel pump pressure but I am wondering if anyone has any ideas or has ever heard of such a thing.

Thanks,
dj
 

Marvin Gruber

Yoda
Silver
Country flag
Offline
Not that uncommon. Sounds like fuel floats in carbs, floats could be filling up with gas and the left turn moves floats more than right turn.
Marv
 
OP
D

DonJ

Freshman Member
Offline
Marv, thanks for the response. Can I lean on you a bit more? Can you expound a little on you theory. I would like to get a better understanding of what you think may be going on.

Thanks,
dk
 

Geo Hahn

Yoda
Country flag
Offline
I had this exact same problem -- engine would sputter on fast lefts.

The fuel floats were leaky and partially water-logged (okay, fuel-logged). The causes the float to sit lower and thus offer too much fuel.

They weren't so loaded with fuel that they would fail to shut the valve... until the hard left. The left turn pushed fuel to the outboard side of the bowl which caused the float to sit even lower than usual -- with the result that the valve did not close and lots of fuel was sucked in the intake.

It felt like the engine was starved for fuel but in fact it was flooded. Once I was out of the turn it would cough and clear and things would be okay again.

The simple solution was to replace the floats with a pair made from Nitrophyl - those are solid and should never take on fuel. I replaced mine in situ rather than remove the carbs just for this.

Having the carbs upside down on the bench is the 'by the book' method but if you are careful you can set the float height with the carbs still in place.

At the same time I replaced the screws that secure the float bowls with socket-head cap screws as those are easier to undo and do than the flat-head screwdriver screws that are stock. A small thing but helpful.

Some additional, possibly useful, material here: https://forums.jag-lovers.org/tv.ph...lW5pAaVMwbWwIkTc2gug3MTaF0mZQ2hxCmxlYAQDDZh7Q
 
OP
D

DonJ

Freshman Member
Offline
So I talked to the shop today. They said they were going to check the float levels. I gently suggested they closely inspect the floats (based on the responses I received here). Couple of hours go by and I get a call back. It seems that they changed out the floats and the stuttering has disappeared. You guys nailed it. Special thanks to Geo Hahn. You also helped me with tires several weeks ago.

dj
 

LarryK

Obi Wan
Gold
Country flag
Offline
It is best when doing any British car carb, to use anything you can get that is alcohol resistant. The modern fuels eat up all the old rubber and brass and corrodes copper equally. If they sit for any amount of time use the marine grade stabilizer as it saves boats aluminum tanks and should do well on our steel and brass components.
 
Similar threads
Thread starter Title Forum Replies Date
D '69 E-Type sputters, coughs & dies Jaguar 20
R TR6 Clutch Master Cylinder Hydraulic Line (Thread / Flare Type) Triumph 4
S TR2/3/3A 187 NOS sleeved type thermostat Triumph 16
M Series 3 E-Type Bonnet Jaguar Classifieds 0
Basil The new Kia E-Type? Jaguar 6
H TR4/4A A-type overdrive pump Triumph 4
Got_All_4 TR6 Refurbishing gearbox with A type overdrive Triumph 7
P Wanted E type spare tire bracket Jaguar Classifieds 2
P Wanted 62 E Type spare tire bracket Other British Classifieds 1
Got_All_4 TR6 Routing Speedo cable for a J type tranny in my TR250 Triumph 4
Got_All_4 TR5/TR250 Trying to figure out rear transmission mount with a J type tranny Triumph 9
I GT6 A type OD vs D type - engagement speed? Triumph 3
J For Sale Jaguar E Type and MK2 spares Jaguar Classifieds 0
VooDooDaddy63 Basic E-Type Question: Fasteners - Metric or SAE or ...? Jaguar 15
D TR2/3/3A Type A overdrive not engaging Triumph 0
D TR2/3/3A Type A overdrive not engaging Triumph 16
S For Sale Lotus Elan Factory Workshop Manual on CD/ROM - Type 26 - 1963 - 1965 Other British Classifieds 0
B Resistor type vs non-resistor type spark plugs for 100-6 Austin Healey 17
K TR4/4A TR4 Fuel Gauge'"light bulb socket" type? Triumph 11
Martinld123 H Type Carburetors BN2 M version Leaking Fuel At Jet Bearing Area Austin Healey 18
AH67 Heat Shield finish 66 Type Jaguar 5
AUSMHLY Grease type for zerk fittings Austin Healey 7
M TR4/4A A type Overdrive Oil Leak Fix Triumph 3
M 5-speed, 1968, 4.2, E-Type, OTS Jaguar 3
M e-type siries 1.5 shock abosorbers Jaguar 3
B TR2/3/3A 'A' type Front calipers, TR3 vendor??? Triumph 7
M E Type 4.2 engine rebuild Jaguar 4
D E-Type steering wheel Jaguar 6
DrEntropy E-Type windshield FYI: Jaguar 1
TRclassic3 TR4/4A A type OD working in 3rd but not in 4th Triumph 5
Graham H TR2/3/3A A type overdrive Triumph 6
H Post-War Other Wiper Motor [Early type DR2] Issue Triumph 7
M E-type series 1 plastic dash vents Jaguar 1
M TR2/3/3A SU H Type Carberator Float Lever Adjustment Triumph 10
KVH General TR Type A Laycock Overdrive Questions Triumph 8
Talon TR2/3/3A Float lever issue on SU type H carbs Triumph 1
Boink Left-hand Drive E-type at Windsor Jaguar 5
H Clutch-Type Differential Austin Healey 5
M Brass F type radiator shell build Restoration & Tools 11
NutmegCT Type L SU fuel pump Austin Healey 8
Basil Terrible way to spot an E-type Spotted 4
C TR2/3/3A A-type overdrive drain plug oring Triumph 1
J TR4/4A TR4 A Type Overdrive Part mixup Triumph 4
55modified Radiator sensor thread type size needed for bn1 Austin Healey 12
PC X-type shooting brake Spotted 0
J MGB 1974 1/2 MGB gasoline type MG 5
Jim_Gruber Non LBC but saw my first Civic Type R Yesterday Spridgets 24
M S1 e type radio console Jaguar 2
Basil E-Type fuel tank mounting bolts [$&^##$%*!!] Jaguar 16
CJD TR2/3/3A A type Overdrive Seal Triumph 9

Similar threads

Top