# Engine surging **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** ford, f150\ **Created:** [July 23, 2009, 1:22am UTC](https://community.cartalk.com/t/engine-surging/33829 "2009-07-23T01:22:04Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![montyv](https://avatars.discourse-cdn.com/v4/letter/m/90db22/32.png) [@montyv](https://community.cartalk.com/u/montyv)\ **Post date:** [July 23, 2009, 1:22am UTC](https://community.cartalk.com/t/engine-surging/33829/1 "2009-07-23T01:22:04Z")
truck starts and runs fine. after about 30 minutes, especially in the heat, it surges at low RPM. I will have to feather the throttle to get it to go from a stop. ultimately it dies. seems not to be getting enough fuel. after a while it will start and run fine again. what can i check. it is fuel injected. 1986 model with new engine about 2 years and 5-6000 miles ago. ---
**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\ **Post date:** [July 23, 2009, 10:57am UTC](https://community.cartalk.com/t/engine-surging/33829/2 "2009-07-23T10:57:32Z")
I am guessing it is getting a little too warm. Does it tend to do it more when the tank is below half full? ---
**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\ **Post date:** [July 23, 2009, 12:21pm UTC](https://community.cartalk.com/t/engine-surging/33829/3 "2009-07-23T12:21:45Z")
You may be right. Fuel pressure may be falling off. How would one know? One could put a fuel pressure gauge on it, and measure the fuel pressure after the engine has been running about 30 minuets. The engine was changed; but, how about the fuel filter? Change it, regardless, now. ---
**Author:** ![montyv](https://avatars.discourse-cdn.com/v4/letter/m/90db22/32.png) [@montyv](https://community.cartalk.com/u/montyv)\ **Post date:** [July 23, 2009, 5:31pm UTC](https://community.cartalk.com/t/engine-surging/33829/4 "2009-07-23T17:31:12Z")
the problem happens regardless of fuel level but yesterday i was probably about 1/2 full and it was the hardest to restart it has ever been. it would start to catch and i could barely keep it going for 10-20 seconds be quickly feathering the throttle but it wouldn’t quite catch. when it did catch, after about 30 min. it ran fine again. temp was probably 100 outside.