Possible problems with fuel.
Possible problems with fuel. When I press on the gas the car starts to accelerate, but after a second or two of acceleration it will briefly feel like it decelerates (jerks back) followed by a quick acceleration (jerk forward). It feels like if the car isn't getting enough fuel. It doesnt happen all the time though, some days it runs fine, others it's REALLY bad.
I recently changed the plugs and wires, the fuel filter, and the oil so it should be running awesome right? Wrong!
So I was thinking it was the fuel pump failing, but now I'm wondering if maybe it's the injectors? What do yall think? Thanks!
I recently changed the plugs and wires, the fuel filter, and the oil so it should be running awesome right? Wrong!
So I was thinking it was the fuel pump failing, but now I'm wondering if maybe it's the injectors? What do yall think? Thanks!
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo How would I check the plugs and fuel pressure?
And I dont know if its related, but when I try to turn the car on, i usually have to turn the ignition twice. Except when its cold out it will turn on the first time. Would a failing fuel pump also cause this?
Thanks
And I dont know if its related, but when I try to turn the car on, i usually have to turn the ignition twice. Except when its cold out it will turn on the first time. Would a failing fuel pump also cause this?
Thanks
12 Second Club
Joined: Jun 2008
Posts: 2,585
Likes: 3
From: Edmond, OK
to check plugs, pull them out and make a visual inspection. u can check fuel pressure with a fuel pressure gauge at the fitting on the end of the fuel rail
yes a failing pump can cause stuttering. thats how mine acted before the pump suddenly died. a dying pump isnt giving adequate fuel pressure causing a stutter
yes a failing pump can cause stuttering. thats how mine acted before the pump suddenly died. a dying pump isnt giving adequate fuel pressure causing a stutter
bump for this, mine is doing the same thing. Started 2 days ago and gets worse every time I drive it. I was also thinking fuel pump, but I do not have the money right now to buy one..
I replaced my plugs a few weeks back so they should be good. I havent had time to check the pump, maybe this week. Its weird cause if im under 2500rpm the car runs fine (except for a little valve clatter once in a while) but once it reaches 3000rpm its over. The car stutters and as much as i accelerate the car wont move.
Txjeep when is the last time you changed your plugs?
Txjeep when is the last time you changed your plugs?
I replaced my plugs a few weeks back so they should be good. I havent had time to check the pump, maybe this week. Its weird cause if im under 2500rpm the car runs fine (except for a little valve clatter once in a while) but once it reaches 3000rpm its over. The car stutters and as much as i accelerate the car wont move.
Txjeep when is the last time you changed your plugs?
Txjeep when is the last time you changed your plugs?
I have no misfire readings at all
It also only does this when in drive(tension on the engine), in neutral I can rev it up to redline with no problem at all. This leads me to believe it might be the crank position sensor.. also maybe the MAF, easy way to test the MAF is to just unplug it and drive it. I need to do more research though!
My fuel filter is also 15,000 miles new, soo that rules that out also
12 Second Club
Joined: Jun 2008
Posts: 2,585
Likes: 3
From: Edmond, OK
well, my engine was completely rebuilt 15,000 miles ago so they are about 15,000 miles old lol My engine does exactly what you are explaining, runs fine until you give it a little gas, crosses 3k rpm and starts stuttering.
I have no misfire readings at all
It also only does this when in drive(tension on the engine), in neutral I can rev it up to redline with no problem at all. This leads me to believe it might be the crank position sensor.. also maybe the MAF, easy way to test the MAF is to just unplug it and drive it. I need to do more research though!
My fuel filter is also 15,000 miles new, soo that rules that out also
I have no misfire readings at all
It also only does this when in drive(tension on the engine), in neutral I can rev it up to redline with no problem at all. This leads me to believe it might be the crank position sensor.. also maybe the MAF, easy way to test the MAF is to just unplug it and drive it. I need to do more research though!
My fuel filter is also 15,000 miles new, soo that rules that out also
Thats funny i noticed today in neutral i can rev it up no problem too, but when its in any gear it stutters. And now its starting to stutter around 2300-2400 rpm.
I really doubt its the plugs cause even before the plug swap it acted the same. I'll try the MAF test in a bit.
I havent actually changed the fuel pump yet though so that might be my problem.
I really doubt its the plugs cause even before the plug swap it acted the same. I'll try the MAF test in a bit.
I havent actually changed the fuel pump yet though so that might be my problem.
My car did this a while back and it turned out to be a clogged injector. It sounded fine in nuetral but under load it sputtered and vibrated. It usually will throw a code, but you could have one pending that hasn't tripped the light yet. It has to misfire quiet a few times to trip the light. Good luck
My car did this a while back and it turned out to be a clogged injector. It sounded fine in nuetral but under load it sputtered and vibrated. It usually will throw a code, but you could have one pending that hasn't tripped the light yet. It has to misfire quiet a few times to trip the light. Good luck
olsvado-- I unplugged the MAF on mine, that didnt do anything, like nimss suggested it wouldn't be the crank shaft pos. sensor if it only does it under load, so the same goes for the MAF also.