started yesterday but not today
Thread Starter
Joined: Feb 2004
Posts: 1,667
Likes: 0
From: jacksonville, fl
motor started yesterday but not today well i was so stoked yesterday when my car actually fired up and ran, and i did it like 10 times yesterday, no problems. then yesterday we were just standin around the car when it was runnin and it just stopped. i didnt think nothin of it since my uncle touched something. so i go back this morning and i try to start it and it hickups and acts like it wants to start but nothing. at first i thought i wasnt getting spark but then i got some starter spray and sprayed it down the tb and it fired right up for about 3 secs. so i guess wha i am asking is what do i need to check for fuel foul ups?!? i have a speartech wiring harness just for the info. i know i am getting fuel up to the fuel rails because when i loosen the fittin fuel starts to come out. and another thing is when it was runnin yesterday and i would give it gas... it was like the car was hesitatin before it responded? so please any and all help is desperatly needed! thank you so much
daniel
daniel
Last edited by 68birdls1; Nov 23, 2004 at 06:12 PM.
Have you done any custom tuning? Those hotcams suck with stock tuning, and that hesitation you describe when touching the throttle is usually tuning related. Another cause for that hesitation could be a vacuum leak, but you would also have an abnormally high idle rpm if that was the case.
Sounds like you have a fuel issue if it can start up with starter spray.
Sounds like you have a fuel issue if it can start up with starter spray.
Thread Starter
Joined: Feb 2004
Posts: 1,667
Likes: 0
From: jacksonville, fl
lol no i poured a whole bunch in this morning! it should have atleast 1 gallon at the very least!
nineball: the computer i have was custom programmed for the hotcam. i bought it from someone else on this board. yesterday when it was runnin, it was fine no surgin or anything, just idled. the only thing i didnt like was how hesitant it was when i gave it gas!
so do you think i should first check my fuel pressure and then move to the injectors and so forth? i was so happy yesterday and when this happened today it just crushed me
and how about my starter broke to! yea and a new one is $170
nineball: the computer i have was custom programmed for the hotcam. i bought it from someone else on this board. yesterday when it was runnin, it was fine no surgin or anything, just idled. the only thing i didnt like was how hesitant it was when i gave it gas!
so do you think i should first check my fuel pressure and then move to the injectors and so forth? i was so happy yesterday and when this happened today it just crushed me
and how about my starter broke to! yea and a new one is $170 Thread Starter
Joined: Feb 2004
Posts: 1,667
Likes: 0
From: jacksonville, fl
oh yea, i already checked all of my grounds. but i am just now remembering that my ground to my vats came loose but now it isnt. and i was wondering if the vats saw that it wasnt working for a minute, would it now be messed up? and is there any way to reset the computer without loosing my hotcam specs? thanks alot guys
Trending Topics
Thread Starter
Joined: Feb 2004
Posts: 1,667
Likes: 0
From: jacksonville, fl
cool, well i got a scanner from a buddy and i am gonna scan it when i get home. if it says vats or something along those lines, can i just clear the code? thanks
daniel
daniel
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
Originally Posted by 68birdls1
cool, well i got a scanner from a buddy and i am gonna scan it when i get home. if it says vats or something along those lines, can i just clear the code? thanks
daniel
daniel
Thread Starter
Joined: Feb 2004
Posts: 1,667
Likes: 0
From: jacksonville, fl
yea i do have a vats bypass! but i think that my ground came loose while the motor was running and the bypass lost power and the computer thought that the car was being stolen, so it shut it off right then and there!?! dont know but it sounds like it coud happen lol. i will find out today
Thread Starter
Joined: Feb 2004
Posts: 1,667
Likes: 0
From: jacksonville, fl
well i scanned my car earlier today and it cam up with p 452.. which is my emission crap that i took off. so i know thats not holdin it back. and then i tried startin the car and it just hickups and thats it. so i checked the power to the injectors and i am getting power even when i turn the key, so thats not it! my vats module is definatly hooked up. and still when i spray the starter spray down into the car it still fires for a second or two. so what else could it be. i am gonna go buy a fuel pressure gauge tomorrow and check my fuel pressure.
i have one question though... if my vats was keeping the car from starting, wouldnt it say it when i scanned the computer? please brothers lol i really need help!
daniel
i have one question though... if my vats was keeping the car from starting, wouldnt it say it when i scanned the computer? please brothers lol i really need help!
daniel
Thread Starter
Joined: Feb 2004
Posts: 1,667
Likes: 0
From: jacksonville, fl
all right, well i just checked my fuel pressure through the shrader valve, and as soon as i turn the key to on, it goes up to lie 5 psi and then drops! then when i turn the key, no fuel pressure at all?!? any idea what this means? and i do have power at the injectors, does this mean that my fuel pump might be bad?
Originally Posted by 68birdls1
all right, well i just checked my fuel pressure through the shrader valve, and as soon as i turn the key to on, it goes up to lie 5 psi and then drops! then when i turn the key, no fuel pressure at all?!? any idea what this means? and i do have power at the injectors, does this mean that my fuel pump might be bad?
check your power and grounds at the fuel pump and relay
Thread Starter
Joined: Feb 2004
Posts: 1,667
Likes: 0
From: jacksonville, fl
i finally figured out what the problem was... damn msd fuel pump crapped out on me! so now as soon as i save up some money lol i will be gettin the walbro 255. yall wouldnt happen to know anybody that has one for sale would ya? lol let me know if ya do. thanks
daniel
ohh yea, i just want to say thanks to all the people who responded. i really do appreciate it! thank you so much!
daniel
ohh yea, i just want to say thanks to all the people who responded. i really do appreciate it! thank you so much!
TECH Enthusiast
Joined: Apr 2004
Posts: 749
Likes: 0
From: Chandler, Arizona
I would assume you used an inline pump. I just bought a GSL392 for the conversion we're doing on my son's 70 GMC pickup. I got it off Ebay, brand new for $140 shipped. New ERA also carries them for that price.
Thread Starter
Joined: Feb 2004
Posts: 1,667
Likes: 0
From: jacksonville, fl
hey guys, i thought i would just get on real quick and let ya know how it turned out. well i knew my pump was dead so i ordered a walbro 255lph! hooked it up and i still got no pressure! so i was pretty pissed but i didnt mess with the car for a couple of days and i went back when i was calm. i started messin around with the fuel system and disconnected the hose at the end of the pump and gas was spurting out of there pretty nice. so then i bypassed my 99 vette filter and i got over 100 psi at the rails! didnt start it or anything just to make sure my pump was working. so after that i have come to the comclusion that my filter/regulator is bad. no one carries them in stock so i have to wait until tuesday or wednesday to get another one! but i am almost positive that that is the culprit! i will let yall know how it goes once i get the filter.
but i am almost positive that that is the culprit! i will let yall know how it goes once i get the filter.