T T Travis 76 Jul 27, 2017 They are not bolts. They are air injectors for the emissions system. The air pump that is most likely not on your engine pumps air into the exhaust ports. I replaced mine with stainless steel plugs, they are pipe thread.
They are not bolts. They are air injectors for the emissions system. The air pump that is most likely not on your engine pumps air into the exhaust ports. I replaced mine with stainless steel plugs, they are pipe thread.
