fordtech
NAXJA Forum User
- Location
- Amherst NY
My 98 has 79k on it. I bought it a month or so ago with 76K. Runs great.
I noticed at idle that there is a slight rythmic 'thump' noise. Im pretty sure it is piston slap, but havent gotten under and listened with a scope yet.
I noticed a few times under hard accel at high rpms just as the tranny shifts a slight rattle (like loose rockers). Last night I was driving around and left it in 1 and held it at a high rpms and definitally heard a rattle noise. I havent gotten under the hood to check it out, or tryed to make it happen more than this one time.
I have 10-40 in it I think, I will definitally run 10-40 on the change this weekend. Pressure seems good (according to the guage :ha,ha
. I did run half a quart of atf in it on the last oil change (first since I owned) to add some more detergent to the oil. Engine otherwise runs great. I was thinking spark knock or ping, but I have to investigate more.
Anyone have any insite??? I have a 90 day warrenty from the seller, which is getting close.... any advice is welcome.
Thanks
mike
I noticed at idle that there is a slight rythmic 'thump' noise. Im pretty sure it is piston slap, but havent gotten under and listened with a scope yet.
I noticed a few times under hard accel at high rpms just as the tranny shifts a slight rattle (like loose rockers). Last night I was driving around and left it in 1 and held it at a high rpms and definitally heard a rattle noise. I havent gotten under the hood to check it out, or tryed to make it happen more than this one time.
I have 10-40 in it I think, I will definitally run 10-40 on the change this weekend. Pressure seems good (according to the guage :ha,ha
. I did run half a quart of atf in it on the last oil change (first since I owned) to add some more detergent to the oil. Engine otherwise runs great. I was thinking spark knock or ping, but I have to investigate more.Anyone have any insite??? I have a 90 day warrenty from the seller, which is getting close.... any advice is welcome.
Thanks
mike
