LT1 Hesitation
Thread Starter
Racer
Joined: Dec 2012
Posts: 301
Likes: 2
From: NY
LT1 Hesitation
What causes hesitation or lag when you stab the gas pedal quickly while at lower rpms in these LT1 engines? Optispark is new and car has been tuned up. It also has brand new LTCC kit installed. If you gas it steady it will scream through the RPM range. If you hit the gas pedal to quickly it hesitates or bogs severely? The problem is more pronounced when you gas it from lower RPMs. Any ideas please LMK?
Advanced
Joined: Jan 2013
Posts: 86
Likes: 1
From: Steel City PA
What causes hesitation or lag when you stab the gas pedal quickly while at lower rpms in these LT1 engines? Optispark is new and car has been tuned up. It also has brand new LTCC kit installed. If you gas it steady it will scream through the RPM range. If you hit the gas pedal to quickly it hesitates or bogs severely? The problem is more pronounced when you gas it from lower RPMs. Any ideas please LMK?
Thread Starter
Racer
Joined: Dec 2012
Posts: 301
Likes: 2
From: NY
Mine feels like an old 4 barrel carburetor that when you hit the gas quickly or punch it it falls on its face with a big old bog. Like a major vacuum leak, influx of air and no fuel to meet it. Bog city. But steady fuel and it will run through the RPM ranges but feels lethargic.
Advanced
Joined: Jan 2013
Posts: 86
Likes: 1
From: Steel City PA
Mine feels like an old 4 barrel carburetor that when you hit the gas quickly or punch it it falls on its face with a big old bog. Like a major vacuum leak, influx of air and no fuel to meet it. Bog city. But steady fuel and it will run through the RPM ranges but feels lethargic.
First on my list is to check fuel pressure, if that checks out it will be time to try to find the vacuum leak.
