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fast 99's latest activity
fast 99
replied to the thread
Chrome bumpers comparison ?
.
Front bumper from LMC has been on 2 years. No rusting but it has been in storage for 1/2 the time. Chrome wasn't great and material is...
Apr 7, 2025
fast 99
replied to the thread
Computerized carb
.
Apr 7, 2025
fast 99
replied to the thread
HIT THE IGN. KEY AND NOTHING
.
Neutral safety switch as suggested, loose or corroded connection, ignition switch, starter, battery or bad ground. Below will narrow...
Apr 7, 2025
fast 99
replied to the thread
Computerized carb
.
Feedback carburetor with internal MC solenoid. Think they were only used one or 2 years on trucks. Cars were quite a bit earlier...
Apr 6, 2025
fast 99
replied to the thread
Fuel pump
.
It's possible to check for stuck metering rods by inserting a small screwdriver down into the bowl vent. When rod holder is lightly...
Apr 6, 2025
fast 99
replied to the thread
backfire under wide open throttle
.
If valve train issue is suspected [broken valve spring / flat cam] check vacuum. Very likely reading will be irregular. Weak coil is...
Apr 3, 2025
fast 99
replied to the thread
backfire under wide open throttle
.
Did you adjust or check the secondary air valve spring? Depending on application about 3/4 to 7/8 spring wind up. Setting should be in...
Apr 2, 2025
fast 99
replied to the thread
Fuel leak?
.
possible, remove canister, shake to check for liquid inside.
Apr 2, 2025
fast 99
replied to the thread
LE9 305 ESC backfires through exhaust on deceleration
.
Yes, as a test could disable air pump for a short drive. Did you check exhaust with a load? Really doesn't take much of a leak to cause...
Mar 31, 2025
fast 99
replied to the thread
LE9 305 ESC backfires through exhaust on deceleration
.
Is the air pump diverter valve functioning? exhaust leaks? Most common cause is O2 entering exhaust causing unburnt fuel to ignite.
Mar 31, 2025
fast 99
replied to the thread
Hydro brakes
.
From the factory generally hydroboost was used on higher GVW and diesel vehicles. I had a fleet of these trucks with both vacuum and...
Mar 31, 2025
fast 99
replied to the thread
Trailer wiring on a 77 K5? How do I do that?
.
https://www.curtmfg.com/media/catalog/product/5/5/55311_1024x768_a.jpg?width=1024&height=1024&store=default&image-type=image
Mar 30, 2025
fast 99
replied to the thread
Twitchy steering with a big travel trailer (rear sway bar help?)
.
Those would be passenger or SUV tires. Will never work. No reputable tire shop would install P rated in the place of LT tires on a 3/4...
Mar 27, 2025
fast 99
reacted to
DoubleDingo's post
in the thread
Twitchy steering with a big travel trailer (rear sway bar help?)
with
Like
.
Ditch the passenger tires and get E rated tires that are meant to be used on 3/4 ton vehicles.
Mar 27, 2025
fast 99
replied to the thread
Highway vibration 55-65mph
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When vibrating at speed put tranny in neutral. If vibration continues would eliminate engine related issue.
Mar 27, 2025
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