So the vacuum in my 89 GW has been minimized and I was changing the radiator hoses and heater hoses and I have three specific questions. The JEEP is running pretty well right now so I don't believe there is a problem with the vacuum set-up.
1) In the front of the engine where the radiator hose and bypass enter the engine (with the thermostat), there is a CTO (I think it is the HDC CTO valve) with three vacuum ports. None of the three are plugged or connected to anything. Can I remove this CTO and plug the hole with a bolt? If not, should the vacuum ports be capped off?
2) in the back of the engine where the heater hose enters the engine, there is another valve with six valves and none of them are connected or capped. Same question - can I remove the valve and plug it with a bolt? If not, should the valves be capped?
3) The EGR valve (soup can sized silver disk with one valve in the back of the engine) isn't capped - should it be?
TIA
1) In the front of the engine where the radiator hose and bypass enter the engine (with the thermostat), there is a CTO (I think it is the HDC CTO valve) with three vacuum ports. None of the three are plugged or connected to anything. Can I remove this CTO and plug the hole with a bolt? If not, should the vacuum ports be capped off?
2) in the back of the engine where the heater hose enters the engine, there is another valve with six valves and none of them are connected or capped. Same question - can I remove the valve and plug it with a bolt? If not, should the valves be capped?
3) The EGR valve (soup can sized silver disk with one valve in the back of the engine) isn't capped - should it be?
TIA
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