2007 Corolla 1.8 4 cyl
Just turned 33k. (Purchased from Elderly women, didn't drive much) Showroom cond., no codes, runs great..
except: Were feeling an occasional "hiccup" mainly when 1st starting for the day. You may only feel it 1 to 4 times during a 5 mile drive.
-Due to age , we did put oem plugs in
-new intake manifold gasket (oem orange upgrade)
-new maf sensor
-cleaned throttle body and blade
-checked for vacuum leaks
-ran a bottle of gumout (with p.e.a.) in last tank full
Can you think of anything else I could try? I know this engine is one of the best built and should not be doing this as infrequent as it is.
they are great cars with that car wasn't driven that hard either take it on highway and go like 75 mph for two or three hours or pay a professional mechanic with this machine to pressure clean the fuel injectors
@scottykilmer
Thank you!! I watch your video's daily!