1 oil pressure too low? Sat Jun 13, 2015 7:32 am
k-rider
Life time member
hi all
i have just finished fitting an oil pressure gauge to my k100rs ,the gauge is from an old R bike (vdo), bought on ebay, and the sender unit is a vdo-type ,that means its a cheap china product , the gauge is a 0-10 bar , and the sender is 10-180 ohms , wich should be right.
well now, here is the question, when using a5/40 oil , the best reading i could get was 4bar at speed , and the warning lamp flashing at idle ,the contact in the new sender breaks at 11 psi, wich is higher than the standart ,
i then changed oil to a 10/50 , this didnt change the oil pressure at speed, but did raise the pressure at idle to about 1,5-2 bar.
i have read that the oil pressure should be 5-6 bar , so 4 bar is on the low side ,however the engine runs great , no unwanted sounds , oil consumtion is low , around 1l/8000km .
i can see two possebileties : maybe the gauge and sender unit doesnt fit together after all :|,
or could it be the pressure relief valve in the oil pump being faulty?
looking forward to hearing from you gents.
best regards
k-rider
i have just finished fitting an oil pressure gauge to my k100rs ,the gauge is from an old R bike (vdo), bought on ebay, and the sender unit is a vdo-type ,that means its a cheap china product , the gauge is a 0-10 bar , and the sender is 10-180 ohms , wich should be right.
well now, here is the question, when using a5/40 oil , the best reading i could get was 4bar at speed , and the warning lamp flashing at idle ,the contact in the new sender breaks at 11 psi, wich is higher than the standart ,
i then changed oil to a 10/50 , this didnt change the oil pressure at speed, but did raise the pressure at idle to about 1,5-2 bar.
i have read that the oil pressure should be 5-6 bar , so 4 bar is on the low side ,however the engine runs great , no unwanted sounds , oil consumtion is low , around 1l/8000km .
i can see two possebileties : maybe the gauge and sender unit doesnt fit together after all :|,
or could it be the pressure relief valve in the oil pump being faulty?
looking forward to hearing from you gents.
best regards
k-rider
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k100rs 1983 -o:
Shinny black ,exaust from a 16valve ,engine from a 1990 K100 lt,fd ratio :32/11
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