Why does my engine surge at high RPM?
Jets are .116 primaries, .113 secondaries. .065 X .037 Metering rods. Ahhhh, the rest of the details come out. Is it a dead-head regulator? I had a dead-head (non return style) regulator and my engine would surge at higher RPM’s like you described as well.
Why does my Chevy Silverado shudder at highway speeds?
You mentioned shudder in your title. If it is shudder on highway speeds, it it likely the lock out converter which was real common in the 700-R4 tranny. Changing fluid may help for a little while. Best thing for it is some friction modifier additive like Shudder Stop from Dr. Tranny, BG makes a good one too.
How to adjust timing on a Vortec 7.4 year 1998?
How to adjust timing on a vortec 7.4 year 1998. its showing how to adjust timing on a vortec 7.4 year 1998. its showing 22-24 degrees positves at 1000 and after rev it up to 4000 rpm. read more GM Tech (Cam) GMC Mechanic Vocational, Technical or Trade Scho 5,987 satisfied customers Can I do the offset timing com retard with a picoScope 4425
When to increase the engine speed to 1, 000 rpm?
Allow the engine to idle until the engine reaches the normal operating temperature. Important: The Cam Retard Offset reading will not be accurate below 1,000 RPM. Increase the engine speed to 1,000 RPM while performing the following steps.
When to set DTC for engine surge maintenance?
• After driving at 6.25 mph or more, the actual engine idling speed varies from the target idling speed by between 100 and 200 rpm, five times or more during a drive cycle. • If the actual idling speed varies from the target idling speed by more than 200 rpm five times or more during a drive cycle, the ECM illuminates the MIL and sets the DTC.
What causes an engine to surge during a tune up?
Step 2 – An engine’s tune up is a regularly scheduled service, when this service is neglected it can cause the engine to surge. Learn more Step 3 – If a fuel pump or regulator is failing is can cause an unsteady volume or pressure for the fuel system causing the engine to surge. Learn more
How to adjust timing on a vortec 7.4 year 1998. its showing how to adjust timing on a vortec 7.4 year 1998. its showing 22-24 degrees positves at 1000 and after rev it up to 4000 rpm. read more GM Tech (Cam) GMC Mechanic Vocational, Technical or Trade Scho 5,987 satisfied customers Can I do the offset timing com retard with a picoScope 4425
You mentioned shudder in your title. If it is shudder on highway speeds, it it likely the lock out converter which was real common in the 700-R4 tranny. Changing fluid may help for a little while. Best thing for it is some friction modifier additive like Shudder Stop from Dr. Tranny, BG makes a good one too.