Ok it looks like it is normal behavior for LTFT to fluctuate between +/- 3%. I believe the car is trying to compensate for the lean and rich conditions. Ultimately, I do see that this value balanced at 0% (or near it) at the end of the drive.
I think the issue resolved itself...
Wow I've never seen anything like this before. I reset the ECU and after driving 25 miles the check engine light came up with the same code P0171 & pending P0170 - long term fuel trim peaked at 18.75. After driving another 25 miles I started to notice that my long term fuel trim was slowly going...
Originally Posted By: mightymousetech
But your "lean condition" is most likely a vacuum leak from something not connected. Probably one of the vacuum lines at the back of the intake manifold.
I gave it a go to re-check the vacuum lines for the fifth time and I am pretty sure it is not a vacuum...
That is great to hear! Maybe the check engine light coming on after my valve adjustment was just a coincidence? Anywho I'm looking into making a smoke machine so I can introduce it to the EVAP system to check for any leaks. The rubber gaskets I replaced were not no longer pliable so I will be...
I recently did a valve adjustment for my 1999 Honda Accord V6 that is currently north of 250K miles. This was my first time doing a valve adjustment and it is sure not forgiving... Now I'm left with a P0171 code and pending code P0170. I also cleaned the EGR valve, rebuild the PS pump, changed...
Assuming your craftsman lawnmower engine is made form B&S, you should run a quality synthetic 5w-30
"To optimize engine performance, use Warranty Certified Briggs & Stratton Small Engine Oil. Briggs & Stratton offers a Synthetic 5W-30 oil that provides the best protection at all temperatures as...
Off-Topic Alert. Not really necessary for me to open a new thread **
Is Maxlife fully synthetic? From my search it seems as if it IS Fully synthetic but I wonder why it is not advertised as fully synthetic on the gallon bottles vs the 1 quart bottle...
Originally Posted By: SaturnIonVue
Best thing since sliced bread. The valve has no chance to open on its own...there are wire type hose clamps that will give you some extra peace of mind. Concerned about hitting something that knocks the valve loose or off? Probably would be the least of your...
I installed two viper 5901 my 10 accord and 99 accord. A viper 591vx on the 06 Si and they are working perfectly fine. I do like the older viper though because of its faster response time.
Originally Posted By: KB2008X
Originally Posted By: johnachak
Originally Posted By: KB2008X
... If money is not a major part of the equation then I'd suggest the US Jack. If on a budget the HF will work OK. That style has been in use for many decades by pros and amateurs alike. Keith
That...