bad miss at no load operation

Hi,

Are there any additional codes other than a misfire? Next, have you checked fuel pressure to make sure it isn't too high or too low. Also, have you checked for engine vacuum leaks?

Let me know. If you haven't, here are a couple of links to help you do it:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Let me know if you have already done this. If you haven't, try it and let me know what you find. Note: If you have a live data scan tool, check the short term fuel trims and let me know what they are.

Take care and God Bless,

Joe

no other codes. I am retired and only have a cheap scan for codes. fuel pressure gauge test is okay. have not done vacuum test.

Hi,

If you're sure the fuel pressure is good, see if there is an issue with a vacuum leak and let me know what you find.

Take care and God Bless.
Joe

think maybe i found the problem. i guess the last time we went up on mountain to get fire wood we pulled the fuel vapor canister off on some sage brush it is down under the back corner of the cab. will have to get a new one and try it.

Hi,

That certainly will create a vacuum leak. Also, there should be two canisters there. Here are the directions for replacing them. The attached pic correlates with the directions.

________________________

1999 Dodge or Ram Truck RAM 1500 Truck 2WD V8-5.2L VIN Y
Procedures
Vehicle Powertrain Management Emission Control Systems Evaporative Emissions System Evaporative Emission Control Canister Service and Repair Procedures
PROCEDURES
EVAP Canister Location

see pic 1

Two EVAP canisters are used. Both canisters are mounted to a bracket located below rear of vehicle cab on outside of right frame rail.

REMOVAL
1. Remove fuel tubes/lines at each EVAP canister. Note location of tubes/lines before removal for easier installation.
2. Remove mounting nuts at each canister.
3. Remove each canister from mounting bracket.

INSTALLATION
1. Place each canister to mounting bracket.
2. Install nuts and tighten to 9 Nm (80 in. lbs.) torque.
3. Install fuel tubes/lines to each canister.

____________________________

Let me know if this helps or if you have other questions.

Take care,
Joe

i will get new next time i go to town. i live in a very remote location 3 hour drive each way to get to parts store.

Hi,

That sounds like a long trip. When you get to it, let me know if that takes care of the problems. I'm interested in knowing.

Take care,
Joe

okay.