Author Topic: Adjust timing after EGR delete, even if engine runs good?  (Read 289 times)

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Offline Winningbago

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  • I own a: a Motor Home
  • Year: 1984
  • Model: Chieftain
  • Chassis: Chevy
  • Engine: 454
I read a lot on this forum about pros and cons of EGR delete, and I ended up removing mine and putting block plate over the hole and it still runs just fine. I included the vacuum diagram that was stock, and now the updated one.

Do I still need to adjust timing if my engine runs good? I don't experience any hotter temps that I did before, and I don't have any pinging or backfiring. I've considered putting the emissions system back in, but only because I can't really tell if it would improve anything. I don't seem to have any of the symptoms that others have said will happen in removing the EGR valve.

Offline Oz

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  • I own a: Winnebago
  • Year: 1974
  • Model: D24 Indian
  • Chassis: Dodge
  • Engine: 440-3
Re: Adjust timing after EGR delete, even if engine runs good?
« Reply #1 on: March 27, 2021, 10:16 PM »
Personally, I think if you just did this and there's no negative issues so far, drive it a while and observe.

'If it ain't broke, don't fix it" comes to mind.

Offline Winningbago

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  • I own a: a Motor Home
  • Year: 1984
  • Model: Chieftain
  • Chassis: Chevy
  • Engine: 454
Re: Adjust timing after EGR delete, even if engine runs good?
« Reply #2 on: March 28, 2021, 03:26 AM »
Thanks Oz, it's just so hard to determine if this old beast is running as good as it can... If there's something that can be fixed before I leave on my trip in a few weeks I'd like to be able to do it. I know buying a wideband o2 sensor would tell me definitively but that is very expensive.. I know you're VERY experienced with these rigs so do you have any advice for what else I can possibly do to ensure everything is a-ok? Any other advice in general, I feel so overwhelmed with this thing!

Offline Oz

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  • Year: 1974
  • Model: D24 Indian
  • Chassis: Dodge
  • Engine: 440-3
Re: Adjust timing after EGR delete, even if engine runs good?
« Reply #3 on: March 29, 2021, 11:34 PM »
My mechanical knowledge is pretty limited when it comes to the technical nitty-gritty stuff.  Checking your timing does make good sense, just to be sure.  Just like checking all your plugs, wires, vacuum hoses, alternator output, etc.

A good "pre-flight" check of as much as you can do is always prudent.

Offline Blksmk80

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  • Year: 1989
  • Model: Chieftain
  • Chassis: Chevy
  • Engine: 454
Re: Adjust timing after EGR delete, even if engine runs good?
« Reply #4 on: April 01, 2021, 03:56 AM »
Just like Oz, I pre trip the motorhome just like I do my big rig, rather take an hour out of my day and have a stress free or close to it as possible, then worry about things.

Yesterday would be a good example. I checked everything and had a random blow wind hit me while I was cruising at 55 mph. I lost my main awning . Pulled over and the only damage is a hole about 6inches jigh and 8 inches tall.. but I kept it out of the ditch.

Got to my rest area and patched up the motorhome.
On a good note, fixed the generator,  had dinner and start my new job on Saturday.  I'm only 5 hrs away.

Offline Oz

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Re: Adjust timing after EGR delete, even if engine runs good?
« Reply #5 on: April 01, 2021, 01:37 PM »
Too bad about the awning, but best wishes on your new job!

Offline Winningbago

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  • Model: Chieftain
  • Chassis: Chevy
  • Engine: 454
Re: Adjust timing after EGR delete, even if engine runs good?
« Reply #6 on: April 26, 2021, 01:55 AM »
I wanted to update this thread. I've continued my progress in this link for anyone that's interested:

https://www.classicwinnebagos.com/forum/index.php?topic=16026.0