Outer Limits 4x4 Board

gday everyone info needed ive just come back from a 5000 km trip in my 100 series .ran well but the whole back panels are covered in black soot.what could be the problem.Also the oil guage would sometimes drop in level eventhough the dipstick indicates that its full.any info would be much appreciated

ca wrote:gday everyone info needed ive just come back from a 5000 km trip in my 100 series .ran well but the whole back panels are covered in black soot.what could be the problem.Also the oil guage would sometimes drop in level eventhough the dipstick indicates that its full.any info would be much appreciated

Oil guage tells you oil pressure not oil level. This will vary depending on revs and temperature. What were the circumstances that the oil pressure (guage) dropped?


Black soot means incomplete combustion. Could be for a number of reasons, overfueling, bad injector spray pattern, bad timing etc etc. YOu would need a diesel mechanic to diagnose this for you.

Could simply be that you were working the engine too hard going up hills. BLowing a small amount of soot is not a probem, if you labour the engine up hills it will blow more soot, and if you havent washed the car for 5000km's the soot would probably build up.

the circumstances with oil pressure was at normal cruizing speed.it dropped and would come back up again so i guess it may be normal variation

ca wrote:the circumstances with oil pressure was at normal cruizing speed.it dropped and would come back up again so i guess it may be normal variation

no, thats wierd, you should have constant oil pressure at the same RPM

if you drop your rpm then it may go down, but certainly it shouldnt drop if you havent changed rpm.

could be afaulty pressure sensor you think?

could be temperature related....do u have a turbo and did it get hotter thn normal at the low pressure times???

when did you last check/ replace your air n fuel filter?