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We drove 70 miles...then broke down

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BrandonBJ8

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As I stated in my earlier post, I picked my Healey up on Friday after not running for 7 years. After getting all new tires, I drove her around town for about 40 miles. I noticed a rough idle, but I thought that may have been common for an older car that hasn't been running in a while. So on Saturday, we got on the highway and after about 30 miles, I noticed she was hesitant when accelerating past 65mph or so. When I got off the highway, she died and wouldn't start. I pushed the Healey to the side of the road and saw a trail of oil. I had it towed back to the mechanic, in fear of what may come. He called me this morning and apparently it was just the diaphram in one of the carburetors. We had the carburetors worked on about 12 years ago and the guy used a rubber diaphram back then. Well, after sitting in fuel for 6-7 years, the diaphram dissolved away some. So all we need to do is replace the diaphrams with urathane ones and we'll be on our way this weekend. I can't wait because I loved driving that car!!

Just thought I would give an update,
-Brandon
 
Oil trial? Diapharm? Fuel pump diaphram maybe? You may wish to get a Moss catalog with exploded diagrams so you will know what your mechanic is talking about. Are you running standard SU carbs?
 
I said oil trail and diaphram. I am aware of what my mechanic is talking about. It's a small rubber diaphram in the carburetor. I even went by there and saw it in person. And yes, my carbs are standard SU carbs.

Thanks
 
Now now there guys, the SU carbs of course use diaphrams but are attached to the Jet.Both terms are used when talking about the SU.As far as the oil trail goes, since the SU {HD Type} has no glands if the Jet/Diaphram were to totally collapse fuel will flow out and probably wash dirt off the engine looking like an oil trail. Best way I know to check the Jet seal on These SU's is to run a finger over the bottom of them if it comes up kinda like oily and brown the "Diaphrams" jest may be beginning to fail.---FWIW---Keoke /ubbthreads/images/graemlins/laugh.gif
 
[ QUOTE ]
I said oil trail and diaphram. I am aware of what my mechanic is talking about. It's a small rubber diaphram in the carburetor. I even went by there and saw it in person. And yes, my carbs are standard SU carbs.

Thanks

[/ QUOTE ]
Tahoe Healey.--Keoke-- /ubbthreads/images/graemlins/lol.gif
 
Keoke, I'm sorry I'm not farmilar with a jet/diaphram. If we are talking about a DH8 on a BJ8 can you guide me to it on the Moss catalog? Is it #13? I have no clue.
I have a BJ8 and I've rebuilt the carbs so I must have missed something.
Brandon, this is how we all learn.
 
/ubbthreads/images/graemlins/shocked.gif Yes TH it is Item # 13. It is called a "JET Assembly" because it consists of a Jet with an attached rubber Diaphram. /ubbthreads/images/graemlins/yesnod.gif---Keoke

/ubbthreads/images/graemlins/savewave.gif
Now if that Brandon fellow will jest ask his mechanic where he obtained Polyurethane ones I want SIX of them!
 
I always called them diaphrams since the 60's. In the late 80's and early 90's purchase from Joe Curto was a must to be sure the material was compatible with gasahol, MTBE, and what everelse was in the gas. Otherwise life was quite short. Now, I think even Moss is fine. /ubbthreads/images/graemlins/yesnod.gif
 
HI HH, /ubbthreads/images/graemlins/iagree.gifThe Oxegenated fuels did cause some of the "Jet Assemblies" /ubbthreads/images/graemlins/grin.gifto fail.Purchasing from a known good source was the only safe option back then.---Keoke /ubbthreads/images/graemlins/driving.gif
 
Keoke - You are correct. They were attached to the Jet.

Sorry if I don't come across as an mechanical expert. I know my way around cars with regards to basic stuff, but when we get to the internals, especially in carbureted engines, that is where I begin to get kind of lost.
(And yes, the Moss catalog is on it's way) /ubbthreads/images/graemlins/smile.gif

I'll check with my mechanic to see where we obtianed the urethane diaphrams.

Thanks!
 
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