- Location
- MilkyWay Galaxy
My 87 Waggy XJ got ticked off again today, LOL. It has done that for >10 years, lifter tick that comes and goes, been that way for 70,000 miles.
Today, when still warming up, 0-30 mph, local 10 minute trip, it decided to develop a slight back fire in the intake, and had low power on take off from a light, last maybe 2 minutes, then the tick vanished (as it usually does) and the back fire and power loss vanished.
Once again the rest of the day it ran better than it ever has, like has been for the last 3-4 months.
My first task is check the #1 and #2 spark plugs that are known to foul from leaking valve guide seals (worn valve guides...on the to do list head job that includes new lifters too), and known to cause power loss at the bottom end from oil fouled plugs #1 and #2, but there was no lifter tick those times.
But I thought the short term, weak back firing was worth noting here.
I will update my findings that I come up with as I get the chance to inspect it, etc.
I recall it back firing once, real bad, many years ago and blowing the vacuum hose to the MAP sensor off the throttle body, and then it really ran like shit. That was an EASY fix!!!:clap:
Today, when still warming up, 0-30 mph, local 10 minute trip, it decided to develop a slight back fire in the intake, and had low power on take off from a light, last maybe 2 minutes, then the tick vanished (as it usually does) and the back fire and power loss vanished.
Once again the rest of the day it ran better than it ever has, like has been for the last 3-4 months.
My first task is check the #1 and #2 spark plugs that are known to foul from leaking valve guide seals (worn valve guides...on the to do list head job that includes new lifters too), and known to cause power loss at the bottom end from oil fouled plugs #1 and #2, but there was no lifter tick those times.
But I thought the short term, weak back firing was worth noting here.
I will update my findings that I come up with as I get the chance to inspect it, etc.
I recall it back firing once, real bad, many years ago and blowing the vacuum hose to the MAP sensor off the throttle body, and then it really ran like shit. That was an EASY fix!!!:clap: