Identifying a Mechanical Problem vs. a Tuning Problem
02-25-2013, 08:20 AM
#1
Junior Member
Thread Starter
Join Date: Jun 2011
Posts: 67
Likes: 0
Received 0 Likes
on
0 Posts
Identifying a Mechanical Problem vs. a Tuning Problem
Not sure if this is where I should post this...
With my first data logging session with TunerproRT under my belt, I am trying to understand what I'm looking at and what I'm looking for. I figure before trying to tune I should be sure that everything is mechanicly sound.
1984 GMC
Stock manifolds
2.5 true duals into flowmasters
LB9 420/443 rv cam (I think)
180* thermostat
89 prom no emissions
exterior fuel pump, adj. fpr (50lbs at the rail)
700r4 .373 rear gears (30" tire)
My BLM's stay in the 150 range at Idle. At tip in they come right down to the 130 range. At cruise they are around 150 again. When decelerating they come right back to around 128.
Is this lean enough to cause damage?
Might I have a fuel delivery problem?
I have checked for vacuum leaks.
With my first data logging session with TunerproRT under my belt, I am trying to understand what I'm looking at and what I'm looking for. I figure before trying to tune I should be sure that everything is mechanicly sound.
1984 GMC
Stock manifolds
2.5 true duals into flowmasters
LB9 420/443 rv cam (I think)
180* thermostat
89 prom no emissions
exterior fuel pump, adj. fpr (50lbs at the rail)
700r4 .373 rear gears (30" tire)
My BLM's stay in the 150 range at Idle. At tip in they come right down to the 130 range. At cruise they are around 150 again. When decelerating they come right back to around 128.
Is this lean enough to cause damage?
Might I have a fuel delivery problem?
I have checked for vacuum leaks.
Thread
Thread Starter
Forum
Replies
Last Post