fifth cylinder misfiring

Engine size??..miles..??

Anyways, the 133 point check up does not mean they repair anything on the list, but is checked. The sales manager makes the calls on what to repair.

HAve a compression check done, the 3.4 motors are common for intake gasket leaks.

Any warranty?

[quote:859751f60b="Service Writer"]Engine size??..miles..??

Anyways, the 133 point check up does not mean they repair anything on the list, but is checked. The sales manager makes the calls on what to repair.

HAve a compression check done, the 3.4 motors are common for intake gasket leaks.

Any warranty?[/quote:859751f60b]

current milles are 63420 engine size is 3.4l but i don't have any warranty i heard that chevy gives 100 000 warranty on engine im not sure if thats true car still runs great only problem if that is problem is when im starting up it takes couple of seconds i thought of doing tune up would that help thanks in advance

Is the starting problem only after it sets? Typical of a bad fuel pump not holding pressure in the lines.
Trun the key to the on position and let the pump run , shut the key off for 5 secs and back to on until pumps stops again. Do theis 3-4 times and then crank.......does it start right up now?


As far as I know the 2004 3.4 motor is 36,000 mile warranty.

A fuel filter and an air induction service cetainly would be smart, but I highly doubt the wires or the plugs are bad. The plugs are double platinum and I see these going 100,000 like they claim.

If you are question a plug or wire, you can swap them to a different cylinder and see if the miss moves.
I am more curious as to the test I suggested.

[quote:cf00bd1473="Service Writer"]Is the starting problem only after it sets? Typical of a bad fuel pump not holding pressure in the lines.
Trun the key to the on position and let the pump run , shut the key off for 5 secs and back to on until pumps stops again. Do theis 3-4 times and then crank.......does it start right up now?


As far as I know the 2004 3.4 motor is 36,000 mile warranty.

A fuel filter and an air induction service cetainly would be smart, but I highly doubt the wires or the plugs are bad. The plugs are double platinum and I see these going 100,000 like they claim.

If you are question a plug or wire, you can swap them to a different cylinder and see if the miss moves.
I am more curious as to the test I suggested.[/quote:cf00bd1473]


Ok i will try that and im gona let u know what the result is probably any time tomorrow

[quote:3e3919f7a7="nermin28"][quote:3e3919f7a7="Service Writer"]Is the starting problem only after it sets? Typical of a bad fuel pump not holding pressure in the lines.
Trun the key to the on position and let the pump run , shut the key off for 5 secs and back to on until pumps stops again. Do theis 3-4 times and then crank.......does it start right up now?


As far as I know the 2004 3.4 motor is 36,000 mile warranty.

A fuel filter and an air induction service cetainly would be smart, but I highly doubt the wires or the plugs are bad. The plugs are double platinum and I see these going 100,000 like they claim.

If you are question a plug or wire, you can swap them to a different cylinder and see if the miss moves.
I am more curious as to the test I suggested.[/quote:3e3919f7a7]


Ok i will try that and im gona let u know what the result is probably any time tomorrow[/quote:3e3919f7a7]


tryed that test and it seems that car starts better so if that is problem what does that have to do with cylinder misfiring and if it does how do i fix that i am on tight budget im suprised i thought if i had mechanical problem that would show on message centar but so far it dosent says anything well thanks in advance i hope its not fuel pump that thing is with instal around 500 bucks

Pretty sure the fuel pump bit it. Like I said, "Is the starting problem only after it sets? Typical of a bad fuel pump not holding pressure in the lines. "

[quote:4aa684b7c1="Service Writer"]Pretty sure the fuel pump bit it. Like I said, "Is the starting problem only after it sets? Typical of a bad fuel pump not holding pressure in the lines. "[/quote:4aa684b7c1]


yeah it figures its something expensive is it ok if i keep driving or do i need to change it right now or maybe just maybe there is cheap way to make it work and how do i get rid of check engine light sorry for not answering sooner but i was busy at work happy hollydays

It depends on how bad you want or don't want to put yourself in a postion of being stranded. The extra cranking will wear on the starter.

What we don't know is that the po305 code is definitly related to the fuel back flow problem. IF it was my car, I would be concerned about a possible intake gasket and check the comprssion of that cylinder...OR verify the pump problem and very closely monitor the CEL afterwards.

[quote:38a68cf4dd="Service Writer"]It depends on how bad you want or don't want to put yourself in a postion of being stranded. The extra cranking will wear on the starter.

What we don't know is that the po305 code is definitly related to the fuel back flow problem. IF it was my car, I would be concerned about a possible intake gasket and check the comprssion of that cylinder...OR verify the pump problem and very closely monitor the CEL afterwards.[/quote:38a68cf4dd]


hi sorry it took me this long to answer but i was so busy working i have a question i noticed that my car is using way to much gas could that be directly reason of fifth cylinder misfiring but i dont smell gas anywhere so im not sure thanks in advance

yes that may be the case, but I wouldn't put off verifying it. Pull the plug on the fifth cylinder and see what it looks like.

[quote:49b87ca93f="Service Writer"]yes that may be the case, but I wouldn't put off verifying it. Pull the plug on the fifth cylinder and see what it looks like.[/quote:49b87ca93f]


i will do that whats strange check engine light went off and didnt come on still am i that lucky that it fixed itself or is that sign that it will die soon heheeh hopefully not