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glad you found the problem.
if you used it on the others you might need to fix them before it happens again. i would be better then the side of the road.
no the only reason i used this different kinda of threadlock was there was no one in my town that sold the 620 and i needed my truck that monday so i took a chance and i guess it didnt work...
note to eveyone on here clean out the injector bores VERY well and if ford says use 620 sealer USE IT!!!! hopes this help out some one so they dont have to do injector cups twice in 2 weeks like i hade to do.....
Glad you are all good now.
