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VG30DE leaking, please help


AgentZ

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Hey there guys I really need your help on this one. Seems my moms Z32 seems to like to dump coolant everytime she stops!

 

90 NA automatic, Seems to have a leak from the pipe running from the front of the intake manifold (from near the throttle butterfly) to what seems to be the cack of the block. I cant tell if it is really this one or not but it seems to be the only likely place for the leak. Is this a common occurence.

 

This is a RHD vehicle and is on the right hand side when facing the engine.

 

Is it an engine out of the car job to fix?

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Multiple heater and intake coolant tubing and rubber hoses exist at rear of engine and below intake. Tube that travels under mainfold to thermostat housing has a flanged gasket that can leak. Will most likely require removal of upper and lower intake. I would suggest replacement of every rubber coolant hose at rear of engine while I had it exposed. Some of the hoses can be replaced with out removing intake (although it requires a contorsionist with small hands).

Most important is to get a good diagnosis before ripping it apart. Do you own a coolant system pressure tester? If you don't have it pressure tested by a shop. The tester allows one to pressurize the cooling system to a high level regardless of temp. Top system up, pressurize and look where the coolant will be spraying from.

Use real Nissan hoses- they last longer and fit better than any other brand. Some of your hoses will be original, 14 years is a looong time for any hose.

Hope this helps

Rick

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