MarcusM2007

So I've done a lot of searching and just want to make sure I've covered all my bases.

Issue:
Engine won't rev past 7k, huge puff of white smoke (oil) is produced and power loss occurs momentarily. Causing CEL codes: Cylinder 2 misfire(P0302) and Rich Air/fuel ratio bank 1(P0172)

Variables:
80k miles currently
Spark Plugs last replaced at 50k
Cat replaced at 40k
Fuel Tank was at less than half

Hypothesis:
Fuel pump is going bad and can't provide enough fuel for the upper ranges of the rev band.

Action Plan:
Replace OEM fuel pump with Walbro from BHR
Replace spark plugs with NGK plugs also from BHR

So does this cover all the bases to start addressing the issue? I know coils are possibly the cause but I'm not ready to sink $500 into the BHR set.

Thanks for reading!!

StealthTL

iTrader: (1)

The huge puff of smoke is prolly not a misfire - does it happen at the same time as the power cut, or at start up?

MarcusM2007

Same time as the power cut, start up is fine. I figured it was all the oil burning because the fuel isn't being delivered to match it.

alnielsen

iTrader: (4)

It's likely not a problem with the fuel pump. White smoke is coolant being burned. Darker colored smoke is oil.

MarcusM2007

Lovely So a coolant seal somewhere? Would this cause the power loss as well?

peterlemonjello

How many miles on the coils?

MarcusM2007

Unknown. I want to hold out for the BHR Ignition kit but still saving up for it.

StealthTL

iTrader: (1)

Are you losing coolant?

Like Al said, white clouds of smoke, especially while moving is prolly coolant, check the level closely.

MarcusM2007

I have not noticed any lost coolant but I will keep a better eye on it now. Sounds like the beginning of a cracked engine?