99 series I 77K

codes: same as before
0300, 0308, 1313, 1314

maintenance done lately: new - 02 sensors, throttle body cleaning, induction cleaning, new magnecors, new bosch +4 fusions, oil change, new air filter.

it has started to bog down randomly when i am driving, started yesterday on the way to paris. happened for about 5 minutes then drove the rest of the 650 mmiles round trip fine till the last couple miles then started again. today it is way worse. last time i had a car do this i through a rod hours later. help.... this is my only car

am i done for???

 

0300 multiple misfire
0308 misfire cyl 8
1313 & 1314 " misfire likely to damage catlyst bank A & bank B
how long have these codes been there ? it's not uncommon to get "codes" after an induction cleaning. Have you changed the fuel filter ? Can you be a little more specific on the "bog" ........does it stall, quit, or just act like it's starving ?

 

Acts like it is starving, and yes i recently changed the fuel filter these codes were there before the induction cleaning. I just cleared them to see what comes back. also noticed something strange while i was monitoring the sensors during a warm up phase. the rpm's at teh tach are off from what is at the ECU. at idle by 3-400 9low on the tach) and as i rev up to 22-2400 they become even farther apart by almost 8-900 rpms. this is reely strange to me. i also did briefly get a 0122 throttle position sensor voltage low right before clearing the codes.

 

haave you done your head gaskets yet? are you losing coolant?

 

I would start with this cylinder 8 code. Check for spark while you have someone crank the car over, of course be careful doing this. If that appears to be working do a leak down on #8 to determine the condition of the cylinder. If the leak down passes, move to testing the injector and a fuel pressure test.

Hopefully you can get this sorted before too much raw fuel is sent down to the CATS. My weekend project is replacing mine after a similar issue last month involving the head gaskets. The cats are not cheap.

 

no not losing any coolant.

i keep trying to figure out which cylinder is number 8. been through the manual and not much luck yet. maybe ill try again tonight. how do i do a leak down?

 

cylinder 8 is right side rear.

Cylinders are numbered like this when looking from the front:

8 7
6 5
4 3
2 1

 

what is your RPM at idle?

 

at the tach its about 700-800 on the computer read from the ecu its between 1100 and 1150

 

I tried to find a supplier in Germany, but my Google skills are weak. You need a tool like this and access to a compressor.

http://www.amazon.com/Cylinder-Leak-.../dp/B000Q6P7GU

You charge the cylinder at TDC with compressed air and measure the amount of leak. If you hear/feel air coming out of the intake or exhaust you might have a valve problem. If you have air coming out of the dipstick or oil filler it could be the liner or the block.

If the cylinder shows only minimal leak you can then focus on ignition or injector issues. While having a leak tester may be a luxury it's very handy for ruling out items related to rings, valves and block issues.