Questions & Answers for: vortec vacuum leaks

...Vortec- replaced the heater coil and now can't get the thing to start. It will start then die. It won't stay started a second. What could be the problem be Hello; You have probably and inadvertantly ...

...vortec and the check engine light stays on and sometimes even blinks when driving. It also misses when idling. While accelerating the miss goes away. I replaced all plugs and wires and the miss is ...

...vortec, had cyl 6 misfire and rough idle, replaced fuel injector spider now engine starts but idle real high then dies thats usually a sign of a vacuum leak, recheck and make sure you don't have any ...

...for any broken or cracked vacuum lines. check for vacuum leaks around plastic portion on intake, {i'm assuming you have the 4.3L vortec engine} if all this is good then have fuel pump pressure

...vortec engine idles high at 1000 and when you open throttle fully it has like a misfire no power This could be anything from a bad vacuum leak to bad ignition coil to spark plug wires to distributor ...

...vortec is having a high idle issue once in awhile about 1200rpms sitting still in gear holding the brake what is wrong with this thing? I can be problem with IAC valve or motor,or there can be vacuum ...

I have a 88 gmc sierra. 4.3 vortec v6. Running high idle when I bought it yesterday. How can I adjust it lower? Where is it located? Thank you. I would first check for a vacuum leak then go from there

...vacuum leak ) Is your check engine light on ? Or low fuel pressure , a lean misfire . Or a leaking fuel pressure regulator . There are a lot of good trouble shooting videos on youtube . Does your ...

...vortec. Attempting to find vacuum leak. Here's a link to your vacuum diagram Christopher,it' the last one down,just enlarge to see better. Repair Guides Vacuum Diagrams Vacuum Diagrams AutoZone ...

...Vortec engine has spark and fuel, but still fails to ignite, there are several possible reasons to consider. Timing: Make sure the burn time is set correctly. Incorrect timing can prevent the engine ...