Greg, Dot 5 to Dot 4 is a NO NO!!!
Dot 5 will not damage your paint as will Dots' 3&4 but the
combination of the two will rot ALL your rubber and leave you with
problems. Suggest you bleed all the lines and get the Dot 4 out of
there a quickly as possible. If you really want Dot 4, all 'soft'
part MUST be replaced.
PS: Still have sponge after 5 years and I got the Dot 4 out in 24 hours.
At 03:22 PM 05/11/2010, Greg Higgins wrote:
>I pulled the M/C from my 63 sprite MKII, it was weeping a little bit and
>dripping onto the rubber floor mat. I took everything apart, put all new
>rubber seals in then bench bled the M/C. I tried bleeding the system with my 1
>man bleeder, no luck. I had my wife pump the pedal, with seven pumps I had a
>hard pedal. Once she took her foot off the pedal, the pressure was gone.
>I took everything apart again, I figured I may have pooched a rubber seal when
>I put the M/C back together. I installed another new rebuild kit, did
>everything again as mentioned, I still have the same problem.
>Anyone have any ideas? I have never had a problem bleeding the M/C with this
>car. The only thing different, I went from using synthetic dot 5 to synthetic
>I was looking at the M/C diagram in my shop manual, it show a rubber thick
>washer called a valve washer that goes into the bore first, mine has never had
>one and has always worked.
>I'm going to try a 3rd time, will put the value washer in and see what
>happens, failing that , I'll throw a match to the bastard.
>Thanks for any info
>Greg Higgins 63sprite
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