[Healeys] fuel in Brake Booster
R. Price Lindsay
050.rpl at gmail.com
Wed Dec 30 16:07:36 MST 2015
A couple of weeks ago my brakes were acting funny. It turned out that all of the fluid was out of the brake/clutch reservoir. I sent the brake servo into be repaired at the suggestion of the list. I just talked to the rebuilder and he said the baffle in the servo was swollen because of a large amount of fuel present in the booster. He mentioned this is not unusual with TR6”s. I guess this can cause the servo to fail and draw the brake fluid into the servo.
Now that the servo is fixed, I don’t want a repeat the problem and am searching for a cause for the presence of fuel. A few months ago I was having a problem with fuel starvation. It turned out to be a pinched fuel line. During my long search I made a number of changes including installing a new distributor cap and wires. Somehow I switched a couple of wires and could not get a spark in cylinders 5 & 6. I found the problem after quite a bit of trying to get the car to run smoothly and driving it for 20 - 30 miles. Also, maybe a contributing factor or maybe not, a year or two ago I moved the vacuum hose to the induction manifold because I installed air cleaners without a connection point for the vacuum hose. (Before the fuel starvation issue I reinstalled the original air cleaners and moved the vacuum hose back up to the air rear cleaner.)
Now for my question: Could the presence of fuel in the brake booster have been caused when I was not getting spark and not burning fuel in 5 & 6? Could the unspent fuel have been sucked into the servo through the induction manifold a while ago, or through the air cleaners recently?
Thank you so much for your collective thoughts.
More information about the Healeys