# Engine issues? **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet, noises, 1500\ **Created:** [December 18, 2018, 12:27am UTC](https://community.cartalk.com/t/engine-issues/131034 "2018-12-18T00:27:57Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![thebatdude03\_145941](https://avatars.discourse-cdn.com/v4/letter/t/278dde/32.png) [@thebatdude03\_145941](https://community.cartalk.com/u/thebatdude03_145941)\ **Post date:** [December 18, 2018, 12:27am UTC](https://community.cartalk.com/t/engine-issues/131034/1 "2018-12-18T00:27:57Z")
I’m having issues with my 98 k1500 5.7L Vortec where it is sputtering and when I’m accelerating down the road and sitting in idle I’ve replaced everything in ignition and just replaced the EGR valve. Video is linked below for idle sound. [https://share.icloud.com/photos/024WnzvIe0eHo0aMmdRXQ-SYw#Coldwater,\_MI](https://share.icloud.com/photos/024WnzvIe0eHo0aMmdRXQ-SYw#Coldwater,_MI) ---
**Author:** ![It\_s-Me](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/it_s-me/32/12660_2.png) [@It\_s-Me](https://community.cartalk.com/u/It_s-Me)\ **Post date:** [December 18, 2018, 1:00am UTC](https://community.cartalk.com/t/engine-issues/131034/2 "2018-12-18T01:00:00Z")
You’re going to have to find another way of uploading that file so we can hear it, Youtube or something similar. Nobody here is going to download a file onto their computer from an unknown person to listen to it. ---
**Author:** ![Yosemite](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/yosemite/32/643_2.png) [@Yosemite](https://community.cartalk.com/u/Yosemite)\ **Post date:** [December 18, 2018, 4:09pm UTC](https://community.cartalk.com/t/engine-issues/131034/3 "2018-12-18T16:09:06Z")
I too passed on the down load. yosemite ---
**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:** [December 18, 2018, 5:16pm UTC](https://community.cartalk.com/t/engine-issues/131034/4 "2018-12-18T17:16:11Z")
yeah, not downloading… but: have you checked your fuel system? fuel filter, fuel pressure? is check engine light on? define “everything” in “I’ve replaced everything in ignition” ---
**Author:** ![thebatdude03\_145941](https://avatars.discourse-cdn.com/v4/letter/t/278dde/32.png) [@thebatdude03\_145941](https://community.cartalk.com/u/thebatdude03_145941)\ **Post date:** [December 18, 2018, 5:27pm UTC](https://community.cartalk.com/t/engine-issues/131034/5 "2018-12-18T17:27:15Z")
I have replaced within the last year: spark plugs and wires, ignition coil, cap and rotor, starter, alternator, EGR valve, new fuel tank and pump, brake lines are all new, pads and caliper, and just finished redoing my pinions in my differential. ---
**Author:** ![thebatdude03\_145941](https://avatars.discourse-cdn.com/v4/letter/t/278dde/32.png) [@thebatdude03\_145941](https://community.cartalk.com/u/thebatdude03_145941)\ **Post date:** [December 18, 2018, 5:27pm UTC](https://community.cartalk.com/t/engine-issues/131034/6 "2018-12-18T17:27:53Z")
[You asked for a YouTube upload](https://youtu.be/9FFZjjvTTds) ---
**Author:** ![It\_s-Me](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/it_s-me/32/12660_2.png) [@It\_s-Me](https://community.cartalk.com/u/It_s-Me)\ **Post date:** [December 18, 2018, 8:06pm UTC](https://community.cartalk.com/t/engine-issues/131034/7 "2018-12-18T20:06:22Z")
Sounds like a leaking exhaust system to me, which will mess with the O2 sensors and cause improper fuel mixture. ---
**Author:** ![Scrapyard-John](https://avatars.discourse-cdn.com/v4/letter/s/f6c823/32.png) [@Scrapyard-John](https://community.cartalk.com/u/Scrapyard-John)\ **Post date:** [December 18, 2018, 8:45pm UTC](https://community.cartalk.com/t/engine-issues/131034/8 "2018-12-18T20:45:49Z")
Is the check engine light on? If so, what codes are showing? Those trucks had issues with the plastic intake manifold cracking. This usually results in a coolant leak, but I suppose could result in a vacuum leak that could cause rough running. More likely, those trucks had issues with the fuel injection assembly in the manifold. It’s often referred to as the “spider” assembly. I don’t know how to check to see if that’s the issue though. Might google problems with “spider” injection assembly - vortec engine and see if you find anything that looks like your problem. ---
**Author:** ![thebatdude03\_145941](https://avatars.discourse-cdn.com/v4/letter/t/278dde/32.png) [@thebatdude03\_145941](https://community.cartalk.com/u/thebatdude03_145941)\ **Post date:** [December 20, 2018, 5:54pm UTC](https://community.cartalk.com/t/engine-issues/131034/9 "2018-12-20T17:54:06Z")
No codes or check engine light on ---
**Author:** ![thebatdude03\_145941](https://avatars.discourse-cdn.com/v4/letter/t/278dde/32.png) [@thebatdude03\_145941](https://community.cartalk.com/u/thebatdude03_145941)\ **Post date:** [December 21, 2018, 3:06pm UTC](https://community.cartalk.com/t/engine-issues/131034/10 "2018-12-21T15:06:23Z")
As far as the exhaust leak and O2 sensor I’ve just ordered a new kit and will update after Christmas. ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [December 22, 2018, 4:50am UTC](https://community.cartalk.com/t/engine-issues/131034/11 "2018-12-22T04:50:42Z")
I’d start w/these three below assuming no codes and you are certain you have healthy sparks at all spark plugs. If any doubt about the ignition system situation, look at the engine idling in the dark, see if you see any sparks flying around in the engine compartment. - compression test - fuel pressure test - verify ignition advance is working If your engine uses that spider ass’y those seem to be really common problem sources.