Vortec distributor moisture reddit. 3. The A/C hose above the cap deposits water on the cap as Dec 24, 2017 · Re: Vortec 350 distributor cap life. Jul 10, 2024 · Reinstalling the Vortec distributor is a pain in the tuckus, but given the failure rate, it's probably worthwhile to yank it out for inspection. Point is, the OEM parts are pretty half-assed; I can only imagine how bad the Chinese aftermarket units are. The distributor gears are also a high-failure item. . 3L Vortec engine from General Motors has powered countless trucks and vans since the 1980s. I've verified distributor gear isn't 180 out by comparing to the old worn out distributor. Common on Vortecs when the plastic hold-down tabs break. Oh and I should've mentioned the O2 bank rich code started when I installed an aftermarket cold air intake that was larger than OEM, so I always just assumed that was causing the code. If it's good, there's a lot of wasted effort. 4L. 3 Vortec engine can develop several common issues like intake manifold leaks and distributor problems. 1M subscribers in the Justrolledintotheshop community. Jun 14, 2020 · Above idle when I was on the throttle it would pull the ionized air out of the distributor and vent it with fresh air. It will still be based on the older Gen1/Gen2 small block with distributor. The bulletin is GM TSB 03-06-04-041A by the way, and for whatever reason that one little bit of info doesn't just jump out at you when researching the subject. Distributor cap not properly secured to the distributor. Seal the factory screen if it is still there or use its opening for one of the barbs. When I replaced the cap/rotor, I used compressed air and blew out the screen. For those absolutely stupid things that you see people bring, roll… The engine suddenly started idling very rough, had no power on acceleration and the exhaust smelled of gas. Jan 3, 2019 · Anyway, if there are still vent screens in the base of your Vortec distributor, pop 'em out and straight to the trash with them, and then be sure the vent holes are clear. 24 votes, 17 comments. 7 vortec L31 MPFI. Post by pamotorman » Mon Dec 25, 2017 5:27 pm turbo2256b wrote: ↑ Mon Dec 25, 2017 3:19 pm I have had a lot of trouble with MSD dizzys and moisture freezing up the advance mechanisms and caps. I just change the cap and rotor more often. Aug 2, 2020 · The OEM Vortec distributor has a plastic housing. They are pencil eraser looking tubes on the bottom base of the distributor. We would like to show you a description here but the site won’t allow us. Missing rubber seal at the rear of the hood, allowing rainwater/condensation to drizzle down on top of the distributor. "I" would check the cam offset number before pulling it out, maybe it's off but not far enough to set a code. We have had similar issues with this… Feb 13, 2025 · The 4. The place to talk about your own car. 1998 Chevy Silverado 5. 2. A member on gmt400 was able to install a nipple on the distributor housing, and tee off a vacuum source to purge the accumulated ozone. Vents are plugged easily and cause white/brown cap dust, and green/black rotor issues, moisture, gases, corrosion, all directly related to poor running and the P0300 because the distributor cant vent correctly. Looking at a photo of an LU3, the intake on it looks a lot like the 5. Should I have done something else with the vent screen? Eventually, the solution was to reduce the service interval on the cap and rotor to 15k (or maybe 20 Can't remember). Doesn't inspire confidence. Feb 6, 2024 · 2. I sealed the cap to the base with RTV as an added measure to keep moisture out. Use this subreddit to post pictures of your GMT400 trucks, show us your mods, or ask for advice. I'm having trouble setting new aftermarket distributor after replacing upper and lower intake gaskets. While known for lasting over 300,000 miles with proper care, the 4. It virtually eliminated the cold/wet weather moisture related misfires I was seeing and the cap and rotors lasted much longer. Posted by u/COgrown - No votes and 7 comments 9K subscribers in the GMT400 community. You'll need a scan tool to get it re-positioned properly. 686K subscribers in the Cartalk community. I sealed the cap to the base with a small bead of RTV. They said it was the way the vehicle was designed, moisture gets in and gets trapped in the distributor and ruins 'em. Sealing the cap is not the solution and may actually worsen the condition, especially in cases where plugged vent screens are present, preventing the escape of the gases. MOISTURE ACCUMULATION Convinced that moisture is collecting inside the cap and promoting misfire conditions, some technicians seal the distributor cap with silicone. That would increase the spark Jun 14, 2020 · When the engine is running it continually pulls the ozone and moisture out of the distributor housing and replaces it with fresh, filtered air. 7l vortec V8s used in the mid to late 90's, so those might be a better source of info than other 2005 model Silverado engines. I did notice green oxidation inside the cap. Mar 25, 2022 · I did have green/black rotor issues, moisture, gases, corrosion, all directly related to poor running and the P0300 because the distributor can't vent correctly. Apr 9, 2011 · distributor. I'm scared to yank the distributor in my '97 7. He claims it works really well. ihmgb zflw kcpnvs lggdoix ogexvgo odi pkqks fgfmzt lzrk bdlh