Howdy,
I plan to replace my GP's (602.962 engine) during the next few weeks & will
check compression a that time. I was checking my handy, dandy Tech
Reference book for the values to look for. It's called "Technical Data -
Passenger Cars from MB for $30. It covers *everything* in the cars and
engines from tires to sunrook to bumpers to water pump with values and sizes
for every possible thing.
Anyway - It says the "as new" value should be 26-32 bar or 377/464 psig.
However, it says, if using tool 001 589 21 00 the value should be 29-35 bar
or 421/507. Why would one gauge require a different value?
BTW, the min value is given as approx. 18 bar / 261 psi.
Is there anything else I should do while I'm doing the GP.s? I bought a
reamer from Sears to have on hand - hopefully the Ps will come out without
too much difficulty. I'll test the compression and adjust the ALDA a tad -
while it's open I'll clean up stuff - what else can/should I do?
I'm replacing the GPs because my preglow light doesn't come on when starting
but *will* light for 60-90 seconds once the engine has started - which tells
me I have 1 or 2 GPs failed. Also, when 1st started it runs slighty
unevenly like all GPs haven't done their job properly.
tia
Larry T (67 MGB, 74 911, 78 240D, 91 300D)
www.youroil.net for Oil Analysis and Weber Parts
Test Results http://members.rennlist.com/oil
PORSCHE POSTERS! youroil.net
Weber Carb Info http://members.rennlist.com/webercarbs
Porsche Road Test http://members.rennlist.com/roadtest/
.
