[Z06] bad gasoline
Thread Starter
Cruising
Joined: Aug 2012
Posts: 12
Likes: 0
bad gasoline
I drove my 2002 Z06 home Friday after a hot and hard day at the track with it running just fine, even after a new tank of Shell I got about 20 miles before I parked it for the weekend.
Sunday it tried to start with a small back fire or two. Put some heat in and replaced the fuel filter and it’s the same, tries to start but just for a second every now and then. No water in the oil or oil in the radiator, plugs are dark but seem OK.
I stopped by the dealership and they have a left and right fuel pump for about $800 for the left or what they called primary and with my good old boy discount, which everyone gets, it’s still 6 something.
Should I drain the tank?
Sunday it tried to start with a small back fire or two. Put some heat in and replaced the fuel filter and it’s the same, tries to start but just for a second every now and then. No water in the oil or oil in the radiator, plugs are dark but seem OK.
I stopped by the dealership and they have a left and right fuel pump for about $800 for the left or what they called primary and with my good old boy discount, which everyone gets, it’s still 6 something.
Should I drain the tank?
Drifting
Joined: Nov 2005
Posts: 1,320
Likes: 242
From: NW Chicago
St. Jude Donor '12-'13-'14-'15
Mine barely wanted to run when I had a broken valve spring. Changed wires, plugs, still bad. Was thinking fuel or fuel delivery when I pulled passenger valve cover, very easy and quick, bingo had a winner. Pull your codes, p0300 - engine misfire detected? Fuel pump and return line check valve should be able to be checked at fuel rail with fuel pressure gauge, correct? Good luck hope its something minor.
Le Mans Master
Joined: Dec 2006
Posts: 7,251
Likes: 16
From: Phoenix Arizona
Mine barely wanted to run when I had a broken valve spring. Changed wires, plugs, still bad. Was thinking fuel or fuel delivery when I pulled passenger valve cover, very easy and quick, bingo had a winner. Pull your codes, p0300 - engine misfire detected? Fuel pump and return line check valve should be able to be checked at fuel rail with fuel pressure gauge, correct? Good luck hope its something minor.
RUN THE CODES! 
COULD BE JUST A BAD WIRE!
Melting Slicks
Joined: Jun 2007
Posts: 2,441
Likes: 25
From: @ work in South Carolina
St. Jude Donor '08-'11-'12
Mine barely wanted to run when I had a broken valve spring. Changed wires, plugs, still bad. Was thinking fuel or fuel delivery when I pulled passenger valve cover, very easy and quick, bingo had a winner. Pull your codes, p0300 - engine misfire detected? Fuel pump and return line check valve should be able to be checked at fuel rail with fuel pressure gauge, correct? Good luck hope its something minor.
Run the codes and do some research before throwing down the money
