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TDoc
Full Access Member
·
From
Flagstaff, Arizona
Joined
Jun 8, 2021
Last seen
Apr 23, 2025
Posts
124
Reaction score
178
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TDoc
reacted to
Turbo4whl's post
in the thread
LE9 305 ESC backfires through exhaust on deceleration
with
Like
.
Here, I'll make it easy for you. :)
Apr 12, 2025
TDoc
reacted to
ChuckN's post
in the thread
LE9 305 ESC backfires through exhaust on deceleration
with
Haha
.
What I see when I look at emissions diagrams. Sorry, I know that’s not helpful.
Apr 12, 2025
TDoc
reacted to
SirRobyn0's post
in the thread
LE9 305 ESC backfires through exhaust on deceleration
with
Like
.
Dual cats. You can get high flow cats if your concerned about the added restriction. Having a working air pump will help the cats to...
Apr 12, 2025
TDoc
replied to the thread
LE9 305 ESC backfires through exhaust on deceleration
.
Exhaust is stinky with air pump hooked up or not. Not that I love huffing exhaust fumes but this k5 has a distinct smelly exhaust. I put...
Apr 12, 2025
TDoc
replied to the thread
LE9 305 ESC backfires through exhaust on deceleration
.
Apr 12, 2025
TDoc
replied to the thread
LE9 305 ESC backfires through exhaust on deceleration
.
I don’t have any good pics of the exhaust manifolds but here’s what the passenger side looks like. Just the single big tube where the...
Apr 11, 2025
TDoc
replied to the thread
LE9 305 ESC backfires through exhaust on deceleration
.
I took the belt off the air pump and no more backfiring! I don’t have a catalytic converter so no need for the air pump? I’ve left the...
Apr 11, 2025
TDoc
reacted to
Ricko1966's post
in the thread
Carb Adapter
with
Like
.
Leave your stock manifold and egr. EGR is not a bad thing,research it,thoroughly. It goes away when you are in the throttle,so no...
Apr 1, 2025
TDoc
replied to the thread
Carb Adapter
.
I have a spare edelbrock 2701 square bore dual plane intake . Would it be worth it to install this instead of my stock Quadrajet cast...
Apr 1, 2025
TDoc
reacted to
fast 99's post
in the thread
LE9 305 ESC backfires through exhaust on deceleration
with
Like
.
Is the air pump diverter valve functioning? exhaust leaks? Most common cause is O2 entering exhaust causing unburnt fuel to ignite.
Mar 31, 2025
TDoc
replied to the thread
LE9 305 ESC backfires through exhaust on deceleration
.
No exhaust leaks since exhaust was redone. Where is the diverter valve? On the air tube to the manifold? I was going to take the belt...
Mar 31, 2025
TDoc
reacted to
PrairieDrifter's post
in the thread
LE9 305 ESC backfires through exhaust on deceleration
with
Like
.
Exhaust leak, or retarded timing. I am no help with the esc systems. The plugs look pretty dang good though, maybe a hair lean.
Mar 31, 2025
TDoc
reacted to
DoubleDingo's post
in the thread
LE9 305 ESC backfires through exhaust on deceleration
with
Haha
.
My 81 does it too, no ESC, no EGR, and the only way to get it to not backfire is let off the gas easy. If I lift my foot quickly it...
Mar 31, 2025
TDoc
replied to the thread
LE9 305 ESC backfires through exhaust on deceleration
.
Factory quadrajet, intake and ESC. Air pump still operational but no catalytic converter.
Mar 31, 2025
TDoc
posted the thread
LE9 305 ESC backfires through exhaust on deceleration
in
Engine & Performance
.
I have a ‘86 k5 Blazer with a LE9 305 with Electronic Spark Control. It has always backfired 1-3 times through the exhaust on...
Mar 31, 2025
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