I have a 2008 Tundra, 5.7L with 183k on it. Owned it since 18k.
Had some misfires & lost power. Plugs/coil did not fix it. Took it to Toyota Dealer & they found a bad exhaust valve spring on cylinder #5.
Should I fix all the springs while it’s apart or just the bad one. I have about 25k towing a 7k camper with this truck. Is this a symptom of towing? I love the truck & want to keep it, especially is this crazy car market.
Thanks!
Brett from Pa.
Depends on how many times you want to do the job. To replace one spring, they bring your #5 to TDC, fill the cylinder with compressed air to hold the valve closed, then remove the keeper, replace the spring and keeper and put it back together. If it were me, and I wanted to keep the truck, I would pull the heads, have them rebuilt, and install them with arp studs and new head gaskets. This way, you're not waiting for the next valve spring to go bad.
