First its not a toyota but seek help immediately.
I have a 1997 Mazda 626 4 cyl.
I just had the timing belt/ and timing tensioner changed. I paid the man, took the car and was getting some slight pinging. Went pay, the turn the distributer about an inch and things were fine. Came home when for run later that day and the no compression.....no power....spuddering.
Went back to mechanic had compression test done and the results were.....175 on cylinders 1 and 2.....and 25 on 3 and 4. He tells me the head gasket is gone between those two valves low on compression.
My question is would have it jumped the timing....and if so would this cost the low compression in 3 and 4 cylinder? its strange to me the car was fine then just as I have the belt changed this happens.
Please help thanks