I am new to these Renix motors. My other jeeps are 96xj 98xj. All i have to compare to and they are completly diffrent. The ticking is coming from around the manifold it comes and goes i can not pin point it. I can find no vacuum leaks yet. but my vacuum bottle not canister when i turn off the engine wait a minute there is no vacuum in the bottle. There must be a leak right?