Ok i have a 2004 RR HSE, 135000 mi i bought used and have did work to now im getting P0301 constantly with no sign of cure help if you can.
Past 2 month and 2000 miles:
8-bkr6equp spark plugs
valve cover gaskets
Changed belts
changed oil
replaced battery
Had slight oil leak, replaced line from oil separator to oil pan.
Had white smoke at start up, replaced PCV valve, line from PCV to oil pan, PCV gasket, front intake gasket, cleaned throttle body, checked rear oil hoses and connections, when finished ran sea foam in system for 5 minutes while idlining.
Ran great and better for a week.
Now cylinder 1 misfire and random misfire, bought 2 new ignition coils and replaceed all spark plugs, swaped coils and boots, all boots read from 1.8k to 2.1k. So moved coils around, replaced all plugs, even sprayed carb cleaner near intake, also disconneted the MAF from air filter box then reconnected, checked valve cover bolts also.
No Help i can clear it, start car with a mis. about out of ideas and ideas will help THANKS in advance.
Also had 12.6 volts off, 13.7 running, with mis fire console lights was dimming a little, have not did a load test yet either.
Past 2 month and 2000 miles:
8-bkr6equp spark plugs
valve cover gaskets
Changed belts
changed oil
replaced battery
Had slight oil leak, replaced line from oil separator to oil pan.
Had white smoke at start up, replaced PCV valve, line from PCV to oil pan, PCV gasket, front intake gasket, cleaned throttle body, checked rear oil hoses and connections, when finished ran sea foam in system for 5 minutes while idlining.
Ran great and better for a week.
Now cylinder 1 misfire and random misfire, bought 2 new ignition coils and replaceed all spark plugs, swaped coils and boots, all boots read from 1.8k to 2.1k. So moved coils around, replaced all plugs, even sprayed carb cleaner near intake, also disconneted the MAF from air filter box then reconnected, checked valve cover bolts also.
No Help i can clear it, start car with a mis. about out of ideas and ideas will help THANKS in advance.
Also had 12.6 volts off, 13.7 running, with mis fire console lights was dimming a little, have not did a load test yet either.
