hi ,i am having a bit of trouble with the old girl,i am geting poor fuel economy and i just have a few questions for those with a scan gauge 2 .
first off ,i have installed a new distributer,crank angle sensor,i done O2 sensors a few years ago( maybe 2).now on my scan guage, at idle the map sensor reads 1.9 psi .with the engine off it reads 4.7psi .i have done voltage test to it and the harness, and they all with in specs, so what could cause this. as my mates map sensor reads 14.7 with the engine off and 5.6 at idle. should i replace the sensor ?
the other problem is my ingintion timming is at 18-20 btdc at idle where as my mates is around 9-10 what could be causeing this ?
any help would be good
first off ,i have installed a new distributer,crank angle sensor,i done O2 sensors a few years ago( maybe 2).now on my scan guage, at idle the map sensor reads 1.9 psi .with the engine off it reads 4.7psi .i have done voltage test to it and the harness, and they all with in specs, so what could cause this. as my mates map sensor reads 14.7 with the engine off and 5.6 at idle. should i replace the sensor ?
the other problem is my ingintion timming is at 18-20 btdc at idle where as my mates is around 9-10 what could be causeing this ?
any help would be good