2001 suburban starting issues

[fxdxharley]

Originally Posted by bighaas79

check for leaking puel pressure regulator. You don't need coil packs.

X2 on the regulator. had the same problem on my 2000 6.0L. An easy check is to pull the vacuum line off the reg and if fuel comes out its no good. beware they are about $100 bucks. the reg is on the left side, above the valve cover right where the fuel lines connect.

[p_rubottom]

Thanks guys, i'll check it out tonight and see what i can find out.

[p_rubottom]

Would the regulator cause it to idle a little rough and stutter when accelerating from a stop?

[clinebarger]

Did you check the regulator like previously stated? If no fuel was present in the vacuum port, check the fuel pressure (key-on engine off 55-62 psi). Did you change the fuel filter? Check engine light on?

[p_rubottom]

Originally Posted by clinebarger

Did you check the regulator like previously stated? If no fuel was present in the vacuum port, check the fuel pressure (key-on engine off 55-62 psi). Did you change the fuel filter? Check engine light on?

No fuel was in vacuum port, the check engine did come on today when it started running bad. Autozone scanned it said it was a miss-fire on multiple cylinders. (with new plugs and wires?) I did get a fuel filter, going to install it tomorrow after work.. How do I check fuel pressure on this engine? Also the Autozone employee that scanned it said since the rough idle is throwing the engine off balance that means its an odd number cylinder??? is that correct?

[clinebarger]

Originally Posted by p_rubottom

No fuel was in vacuum port, the check engine did come on today when it started running bad. Autozone scanned it said it was a miss-fire on multiple cylinders. (with new plugs and wires?) I did get a fuel filter, going to install it tomorrow after work.. How do I check fuel pressure on this engine? Also the Autozone employee that scanned it said since the rough idle is throwing the engine off balance that means its an odd number cylinder??? is that correct?

P0300 multiple cylinder misfire? When you say odd number cylinders I think 1-3-5-7 are misfiring?

[p_rubottom]

Originally Posted by clinebarger

P0300 multiple cylinder misfire? When you say odd number cylinders I think 1-3-5-7 are misfiring?

Yes, thats correct.

[Rudy67chevy]

Originally Posted by fxdxharley

X2 on the regulator. had the same problem on my 2000 6.0L. An easy check is to pull the vacuum line off the reg and if fuel comes out its no good. beware they are about $100 bucks. the reg is on the left side, above the valve cover right where the fuel lines connect.

the regulator cost me $135 at the dealer. autozone or kragen regulators didn't fit right