In a message dated 2/25/00 1:21:05 PM Eastern Standard Time,
kensington-fc@uswest.net writes:
<< Hard braking when out of gear causes tachometer to nose dive and not
recover. Car starts right back up and runs fine except for the problem
when hard braking.
Cannot find any vacuum leaks anywhere, have adjusted carbs and floats
from very lean to extremely rich and all points in between, changed fuel
filters, reset timing from 0 to 16 BTDC with no luck improving the
problem. Even adjusted the valves, no help. >>
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A tough one. Could it be fuel starved under hard braking? This usually
happens when cornering hard, but maybe the carb setup is weird in this Asian
copy of an MG. How are the carbs situated on the engine. What kind of fuel
pump does it have and have you checked the fuel pressure? I have also seen
flexible fuel lines with a hole that lets in enough air to cause a problem.
This car is old enough that you should replace everything that is soft.
Other than that, there are some off-the-wall possibilities. Maybe the coil
wire is loose and when you brake hard it comes out of the coil? Or some
other wire is shorting out. Hard braking is the only time this happens? Is
there a ground wire on the points that might be shot?
I dunno.
Allen Hefner
SCCA Philly Region Rally Steward
'77 Midget
'92 Mitsubishi Expo LRV Sport
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