81 jaguar is leaking water from top rear passenger side of engine. could it be a freeze plug?

old post.
This is really a suzuki G16 engine question
thats ok,
The G16s are used on Suzuki's and Trackers
Vitara's , Esteems, no others world wide.

I have all the photos and books on those cars.
real books and all parts lists. on them , graphics tool.
the freeze plugs (core plugs on all over.)
IN 1996 only one engine, G16b.
But all G16 blocks these are the same.
sides on all G16 base blocks.
2 left side 1 above filter, one just to rear of that, they are huge.
have to be blind to miss left side, (left means same as left car door)

the problem here is there are 2 engines in 1995, then one in 1996
the heads on both engine are NOT THE SAME>
the head is 8v and 16valves heads
and the 16v has freeze plugs in the top ,next to the cam. inside under valve cover !!!.

why not say where the leak is so we can narrow the search. or state the JOB?????????

i have photos of all parts in any G16.
there are no freeze plug in any 8valve head.
but the 16v yes !!!
the 16v head small inside plugs, if leaking turn the engine oil to milk chocolate fast and worse of driven. (just undid worst)

the blocks are the same, both engines, not pistons,
there are no front or rear engine block freeze plugs only side plugs 4 total.
and sure the right side under intake man will be hard to see. look under car right side to see em.
2 left easy to see and 2 right harder.
the right engine block has 2 freeze plugs one in easy view center , under intake man.
and one tucked behind that water manifold that can leak too.
now the last plugs
the 16valve head has a front freeze plug behind the cam cog wheel. and none on the rear of the head.
so 1 front and 3 inside, top.
My guess, G16b has 8 plugs total.
G16a has 4.

things that go POP in the night (cold night)
the rear water outlet fitting (head) does explode every time one runs this head on pure water, frozen, ask my how I know that, and what clueless girl did that,, heheheheheheheheh

could either be a head gasket or a freez plug leaking

• When your heater core leaks it will not leak in the engine bay. The heater core is behind the dash and will make the passenger side floorboard wet. Also the windows will fog when on defrost and a sweet smell will take over the cabin. I don't suspect the heater core. BUT the heater core hoses are against the firewall and one could have cracked a leak. You will notice this though. You will see two smaller hoses going into the firewall on the passenger side of the vehicle. If they are leaking they are an easy spot.

• Your water pump is more in the mid section on top of the belt drive system. Water could be splattering back there but if you see it steadily leaking from back there with the vehicle off then I would not suspect the water pump.

• Freeze plugs are where the engine sits as it is cast, when being made. The holes that are left when the engine is lifted after casting are where the freeze plugs go. This is where the antifreeze circulates around the block to keep the engine cool. This is what I suspect is the problem. If that freeze plug is accessible the you can replace it no problem. If it is not then you may have to take it to a repair shop so they can lift the engine up a bit and replace it.

• Hope this helps and thank you for using FixYa.

Regards, Tony

On my 90 and 92, I have a vacuum line from the driver side intake manifold at about inline with the # cylinder. It travels to the firewall between engine and firewall to a connection underneath the battery.That line goes through the firewall and connects to other lines roughly above your feet if you are sitting in the passenger side of the car.

the most common cause is the water pump leaks, it is on the top front of the engine, passengers side.

Firing order is: 1, 2, 3, 4, 5, 6. Plug #1 is engine rear, passenger end. #3 and #5 are next inline toward driver. Plug #2 is first on front side, passenger side, then #4 and #6 toward driver. The coil pack has each plug number next to it's tower. Remove the cowl plate to get to the rear plugs. Hope this helps.

Have the windscreen resealed. A tempory fix is to tape around the windscreen joint with a wide PVC tape to prevent the ingress of the water.

It is under the car at passenger/driver side. Accessible from underneath and by removing the left rear tire. (Jack it up and its much easier).
2 small nuts hold it in place in its collar. Awkward nut not too difficult....

Hello Macstff ;

1985 jaguar xj6 4.2 L Series 3
Firing Order 1-5-3-6-2-4
# 1 Spark plug at the last cylinder next to the firewall .
# 6 Spark plug at the front of th Engine nearest the fan .

The Rotation of the Rotor within the distributor cap is " Counter Clockwise

The Vacuun Advance Diaghram ( metal ) is more in line with the # 3 Spark plug wire .

Looking from the top near the Passenger side fender . If we know that the Number 3 Plug is more inline with the vacuum advance then moving " clockwise the next plug would be the # 5 and after that would be the # 1 plug

This shold get you on your way providing that nothing else has been tampered with . I hope that this has been helpful to you .

I hope this helps you