Quote:
Originally Posted by dynalow
Thanks for all the advice fellas.
TnBob. I'm going to review my service records to see when ignition work was last done. Since I don't use this as a daily driver any more, it may be some time, not necessarily miles since I had routine ignition work done, or the air filter changed.
Duke 2.6. I don't think it's the cat. No loss of power at high speed. However, I did go in with a "cold" engine. Normally I'll run it up and down the highway to get it good and hot, but since it's every other year and I needed an appointment before 12/31, I went in the middle of the work day.
I think the idle may be too low. It idles at just above 500 - say 600-650. What's normal idle for a 103?
I'm no DIYer, so, I'm just trying to get some possible problem areas to have checked out. My indie is a competent guy and lives in the neighborhood.
I'll keep you informed of the outcome.
|
The catalyst can fail "chemically", but that won't affect exhaust backpressure or power, and as I previously stated "catalyst aging" increases the required bed temperature to achieve maximum reactions, which is why most cars see increasing emissions with time and miles.
If it fails mechically, then higher backpressure can lead to a noticeable loss of power.
Idle speed needs to be specfied in neutral for manual tranmissions and Drive for autos. My manual M103 idles at 700 in neutral.
Failure to get the engine/catalyst fully warmed up can easily result in a marginal failure, especially in cold weather.
Duke
12-31-2015, 01:20 PM
Threaded Mode
