My mounty is throwing codes for 4 adjacent cylinders 1,2,3,and 4... The truck runs great when moving, but shakes at idle... its misfiring in all cylinders... had compression test done, and the cylinders are random from 120-170psi.. Uptown auto says they believe its my timing, and I need to replace all my timing components, but they can't tell unless the tear it down.. and that will be $1200 parts and labor... Is this the case, or something else? Im not sure what to do.. I dont want to spend 1200, and that not be the problem.. Thanks
Compression loss, throwing codes...What is it? on 2003 Mercury Mountaineer
by tat2dnurse in Alliance, OH on February 04, 2013
ANSWER by pushrod , February 04, 2013
Get another opinion, don't sound right!! More likely a vacuum problem, same timing componets for 5,6,7,8 as well so-----!!!
ANSWER by globalhelper , February 05, 2013
AGREE WITH WETRY. THERE ARE WAYS TO TEST TIMING CHAIN ISSUES