# Takes forever to start truck **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** ford, f150\ **Created:** [October 26, 2017, 4:40pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941 "2017-10-26T16:40:58Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![ThousandSolutions](https://avatars.discourse-cdn.com/v4/letter/t/df788c/32.png) [@ThousandSolutions](https://community.cartalk.com/u/ThousandSolutions)\ **Post date:** [October 26, 2017, 4:40pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/1 "2017-10-26T16:40:58Z")
I have to pump gas pedal to get started and rev engine for awhile so it doesn’t die. It takes awhile to start. Once started, it has no problem starting again even after a hours of being parked . Can you point me in right direction to fix slow start? ---
**Author:** ![eddo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/eddo/32/2594_2.png) [@eddo](https://community.cartalk.com/u/eddo)\ **Post date:** [October 26, 2017, 4:52pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/2 "2017-10-26T16:52:02Z")
Year? Mileage? Engine size? These answers will all help us understand better, and help us to help you. 🙂 ---
**Author:** ![Whitey](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/whitey/32/24680_2.png) [@Whitey](https://community.cartalk.com/u/Whitey)\ **Post date:** [October 26, 2017, 5:00pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/3 "2017-10-26T17:00:34Z")
I sincerely hope that the truck is old enough to be pre-fuel-injection if you’re pumping the gas pedal. Maybe the problem is that it’s fuel injected and you shouldn’t be doing that. ---
**Author:** ![shadowfax](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/shadowfax/32/13026_2.png) [@shadowfax](https://community.cartalk.com/u/shadowfax)\ **Post date:** [October 26, 2017, 5:13pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/4 "2017-10-26T17:13:10Z")
I’ll echo @eddo’s request for more information, but first blush I would suspect that fuel is draining back out of the rail when it sits for long enough. If your vehicle has an electric fuel pump, try this: Turn the key to on, not start. Wait till the whirring stops. Then turn it back off, and repeat the process a few times. Does it start right up? ---
**Author:** ![Steakhows](https://avatars.discourse-cdn.com/v4/letter/s/a5b964/32.png) [@Steakhows](https://community.cartalk.com/u/Steakhows)\ **Post date:** [October 26, 2017, 5:17pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/5 "2017-10-26T17:17:46Z")
I agree with Eddo above. Year, Make, model would be a big help. ---
**Author:** ![ThousandSolutions](https://avatars.discourse-cdn.com/v4/letter/t/df788c/32.png) [@ThousandSolutions](https://community.cartalk.com/u/ThousandSolutions)\ **Post date:** [October 26, 2017, 6:57pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/6 "2017-10-26T18:57:18Z")
It is a 1986 Ford f150 xlt. Did the key on and off test with no start. Wow. Just found out it wont start without gas pedal. Cranking, cranking, cranking, and than i barely press pedal and it starts. ---
**Author:** ![ThousandSolutions](https://avatars.discourse-cdn.com/v4/letter/t/df788c/32.png) [@ThousandSolutions](https://community.cartalk.com/u/ThousandSolutions)\ **Post date:** [October 26, 2017, 6:59pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/7 "2017-10-26T18:59:13Z")
![1509044312524-510552787](https://global.discourse-cdn.com/cartalk/original/2X/d/d4d2194a7f5bce4d6871ed461ccb4422a77df9e5.jpg) ---
**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\ **Post date:** [October 26, 2017, 7:07pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/8 "2017-10-26T19:07:11Z")
So, throttle body injection? Have you replaced the fuel pump or fuel filter recently? Edit: Carburetor! ---
**Author:** ![ThousandSolutions](https://avatars.discourse-cdn.com/v4/letter/t/df788c/32.png) [@ThousandSolutions](https://community.cartalk.com/u/ThousandSolutions)\ **Post date:** [October 26, 2017, 7:07pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/9 "2017-10-26T19:07:27Z")
![1509044810446777149011](https://global.discourse-cdn.com/cartalk/original/2X/1/133d098df7e67b6d2312e2cfade607ba1f0f93b3.jpg) ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [October 26, 2017, 7:08pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/10 "2017-10-26T19:08:47Z")
The problem might be with the Idle Air Control valve. [https://www.rockauto.com/en/moreinfo.php?pk=382781&cc=1121678&jsn=472](https://www.rockauto.com/en/moreinfo.php?pk=382781&cc=1121678&jsn=472) The IAC valve allows air past the closed throttle plate under all idle conditions If the IAC valve doesn’t allow air into the engine when attempting to start it, it’s not going to start. As soon as you apply any throttle, it allows air into the engine and the engine fires right up. One way to check for a faulty IAC valve is, with engine warm and idling, take the handle of a screwdriver and rap on the IAC valve. If doing this causes the engine idle to change, the IAC valve is faulty. Tester ---
**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\ **Post date:** [October 26, 2017, 7:12pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/11 "2017-10-26T19:12:46Z")
That old 4-bbl carb could be seeing issues with ethanol in gas. ---
**Author:** ![ThousandSolutions](https://avatars.discourse-cdn.com/v4/letter/t/df788c/32.png) [@ThousandSolutions](https://community.cartalk.com/u/ThousandSolutions)\ **Post date:** [October 26, 2017, 7:14pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/12 "2017-10-26T19:14:10Z")
No replacments lately. I collect all the vehicles my uncle abuses. He moves onto another vehicle and I keep and repair them. ---
**Author:** ![ThousandSolutions](https://avatars.discourse-cdn.com/v4/letter/t/df788c/32.png) [@ThousandSolutions](https://community.cartalk.com/u/ThousandSolutions)\ **Post date:** [October 26, 2017, 7:16pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/13 "2017-10-26T19:16:10Z")
I will check IAC. ---
**Author:** ![ThousandSolutions](https://avatars.discourse-cdn.com/v4/letter/t/df788c/32.png) [@ThousandSolutions](https://community.cartalk.com/u/ThousandSolutions)\ **Post date:** [October 26, 2017, 7:51pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/14 "2017-10-26T19:51:10Z")
![1509047429922-194402735](https://global.discourse-cdn.com/cartalk/original/2X/6/60ab181068b954c8fc9207686aa3b042c88017a5.jpg) ---
**Author:** ![ThousandSolutions](https://avatars.discourse-cdn.com/v4/letter/t/df788c/32.png) [@ThousandSolutions](https://community.cartalk.com/u/ThousandSolutions)\ **Post date:** [October 26, 2017, 7:51pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/15 "2017-10-26T19:51:47Z")
Is that iac? ---
**Author:** ![ThousandSolutions](https://avatars.discourse-cdn.com/v4/letter/t/df788c/32.png) [@ThousandSolutions](https://community.cartalk.com/u/ThousandSolutions)\ **Post date:** [October 26, 2017, 7:57pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/16 "2017-10-26T19:57:30Z")
Investigated area within air filter. Throttle body? The flap that opens and closes was not even attached to it’s arm (thing that moves it up and down). Attached it and i still dont think it moves. closed the flap manually and it started up without gas pedal or dying. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [October 26, 2017, 7:59pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/17 "2017-10-26T19:59:13Z")
That is the by-pass valve for the air injection system. With the engine off and cold actuate the accelerator once and release, then check if the if the choke plate is closed on the carburetor. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [October 26, 2017, 8:00pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/18 "2017-10-26T20:00:09Z")
Sounds like the choke plate was disconnected. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [October 26, 2017, 8:01pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/19 "2017-10-26T20:01:18Z")
The engine has a carburetor and isn’t fuel injected. So there is no IAC valve. It sounds like a problem with the choke on the carburetor. Tester ---
**Author:** ![ThousandSolutions](https://avatars.discourse-cdn.com/v4/letter/t/df788c/32.png) [@ThousandSolutions](https://community.cartalk.com/u/ThousandSolutions)\ **Post date:** [October 26, 2017, 8:16pm UTC](https://community.cartalk.com/t/takes-forever-to-start-truck/108941/20 "2017-10-26T20:16:27Z")
Thanks for the replies. I will let it cool down and see if i can get it to start after i press accelerator once and check to see if choke plate closes. [Next page](https://community.cartalk.com/t/takes-forever-to-start-truck/108941.md?page=2)