How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Tim Mohr Your Own Question
Tim Mohr
Category: Car
Satisfied Customers: 15460
Type Your Car Question Here...
Tim Mohr is online now
A new question is answered every 9 seconds

2008 suzuki forenza tensioner went bad on timing belt.

Customer Question

2008 suzuki forenza tensioner went bad on timing belt. Checked compression on all 4 cylinders and had bad compression on one. Removed everything and have the head off. How do I tell which valves are bent? What next
Submitted: 11 months ago.
Category: Car
Expert:  Tim Mohr replied 11 months ago.

Hi, my name is ***** ***** looks like the number 4 hit the piston the hardest, but you need to have all the valves replaced and the seats ground to do this properly, the only way to tll which one is bad for sure, is with a flow test, the machininsr can do this, bit to go all the way down to where you are at, its best to just have the cpmplete head rebuilt, are you planning to do this your self?

Customer: replied 11 months ago.
As much as I can within reason
Customer: replied 11 months ago.
The 3rd plug from left had low compression
Expert:  Tim Mohr replied 11 months ago.

to do the valves, the valves have to ground properly and seated, this riquires a special maching tool, do you have all the tools to grind the valves and seats?

Customer: replied 11 months ago.
Nope. So is it best to replace all valves? Could this have damaged the piston?
Customer: replied 11 months ago.
I do have a few friends that do that type of stuff. Gotta get all needed parts etc to save some cash
Expert:  Tim Mohr replied 11 months ago.

No, it just bends the valves, it is easier to just buy a rebuilt head, it takesn specialty machines to surface the head, and grind all the seats at a proper angle, or just take the head to a machine shop and have them rebuild it, but yes, all the vakves shuld be replaced,Tim

Customer: replied 11 months ago.
One more question, Had it rebuilt already. Brackets holding camshafts didn't get marked coming off. They look identical but I know that they were supposed to go back in the same spots. Is it going to hurt anything if they are mixed up even if identical? Thanks for the help