Deleted
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Post by Deleted on Aug 1, 2010 20:45:14 GMT
OK..... With most of the mechanicals done, i decided to run her round the block today, and seeing as how she'd been sitting for 15 years, i think she did ok. However...... i sat with the engine running for a few minutes, talking to an admirer... and when i got home, she did a big wee-wee through the overflow pipe on the side of the radiator filler cap. A steaming hot, brown coloured wee-wee to be precise... now i was thinking that maybe... just maybe, the thermostat had siezed... however, having taken off the triangular / round thing that the top hose connects to... there is no thermostsat!!!!!! Just a big gaping hole that looks into the manifold. Now part of the work was emptying half a tonne of kack out of the manifold, so i know that she is clear... and if all is clear there, and no thermostat exists... why is she overheating and doing a big wee-wee on me driveway?  ? Is she constipated somewhere else? Does she need flushing? ? ? |
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Post by Phil Nottingham on Aug 1, 2010 22:06:09 GMT
Definitely at least - the problem with the 3 Litre is that it slopes to the back and sediment settles and hardens at the bottom of the block there.
also there are 2 water distribtion tubes with holes in them on the dizzy side of the block - the front one can be removed from the front of the engine block when water pump is removed, the rear is through an inspection plate at the bacl of the block which can only be accessed on removal of the engine (or cut a hole in the bulkhead) The holes can then be cleared and sediment scraped out.
The rad may also be blocked.
If water is brown then you have got a problem as it means no anticorrosion left in which can cause small water holes in the alloy head to block up and cause localise overheating as well
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Deleted
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Post by Deleted on Aug 2, 2010 13:22:19 GMT
Well i was pretty amazed at how much crap came out of the manifold at both ends... it was like an endless supply and for a while, i thought i was emptying the tardis.
I think i'll run her up a few times with water, then stick an airline on to an opening to try and blow her out.
And by anti corosion... do you mean anti freeze?
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Post by Phil Nottingham on Aug 2, 2010 18:18:40 GMT
Yes and good luck
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Post by Deleted on Aug 3, 2010 9:23:35 GMT
Well i've been told that fairy liquid and a hose will be my best option for flushing her out, as fairy liquid is good at loosening up all that brown crud.
Though i still think that she'll need a few blasts from the air line to finish the job off.
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Deleted
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Post by Deleted on Aug 3, 2010 12:51:46 GMT
I am confused.... very, very, very, very, very confused.
Filled her up with the garden hose, then allowed the level to drop and gave her a few squirts of washing up liquid, before topping her up with the garden hose again... and replacing the radiator cap.
The next step was to repeat Sunday's actions, so i drove her round the block, parked up on the driveway, turned the heater on to hot, then left her in park, while the engine ticked away on idle.
The temprature rose to the top of the white bar, then sat there in the small black void between the top of the white, and the bottom of the red.
And i waited... and waited... and waited... and waited.
All in all, i sat there with her ticking over for about twenty minutes, and she didn't go into the red... nor did she do a hot brown wee-wee all over my driveway when i gave up and turned her off.
What is going on with this car?
Answers on this postcard please!!!
I mean on the one hand i'm happy, cos no one wants a problem car... however, i was tooled up for the long haul and got nothing.
Heater is blowing out burning hot air, so i know that the heater is not blocked... which leaves the block and or the radiator... but then she hasn't boiled over, so is she now clear?
Where does a temprature guage normally sit on a P5 that's warmed up and driving?
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Post by Phil Nottingham on Aug 3, 2010 18:17:16 GMT
The gauge is not meant to be accurate - anywhere between cold and hot is OK. Any other signs of overheating?
How is fuel gauge reading?
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Post by Deleted on Aug 3, 2010 23:36:25 GMT
THE FUEL GUAGE WAS READING 1/4 OF A TANK... HOWEVER, AFTER MY ATTEMPTS TO FLUSH THE COOLING SYSTEM SHE'S NOW READING JUST ABOVE EMPTY!!!!
CAPS LOCK
She's been running rich, as the timing is advanced and needs to be retarded, when i turn her off she tries to keep going, but finding a mechanic who uses a strobe gun instead of a laptop is easier said than done these days.
Timing being out can increase the running temprature, so hopefully by tomorrow she should be ok
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Post by Warwick on Aug 4, 2010 0:37:17 GMT
Mungo,
This sounds like your troubleshooting on the cooling system is being complicated by an intermittent fault with the instrument voltage regular. Does a P5 have a regulator like the P5B?
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Deleted
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Post by Deleted on Aug 4, 2010 0:45:04 GMT
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Post by Warwick on Aug 4, 2010 0:54:04 GMT
On a P5B, it is a small relay-like module tucked up under the dash which provides a constant 10 volts to the fuel and temperature gauges. If the voltage is off, so is the reading.
There are lots of posts about it in the P5B section. Most recently by John Wallett I think, but I can't remember whose thread it was in reply to. Search should find them.
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Post by johnwp5bcoupe on Aug 4, 2010 5:43:44 GMT
Mk1 and Mk1a don't have one Warwick Mk2 onwards have.
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Post by Warwick on Aug 4, 2010 7:05:18 GMT
Thanks John.
However, does sound like a superimposed intermittent instrument electrical fault.
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Deleted
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Post by Deleted on Aug 4, 2010 10:52:10 GMT
not really warwick, as initially she did overheat.
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Post by Warwick on Aug 6, 2010 0:41:33 GMT
At least yours produces heat Mungo.
My gauge needle hasn't moved since Easter last year.
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Deleted
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Post by Deleted on Aug 20, 2010 10:22:41 GMT
you didnt just over fill it when u started?
When i fill my TR up it to the brim it seems to chug out about 3/4 of a pint of water/coolant. The level in the radiator always sits just above the radiator core pipes which I think is a little precarious, but its never overheated, even when sat in traffic for hours.
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Post by enigmas on Aug 20, 2010 12:45:30 GMT
David, there's supposed to be room for expansion of the coolant when the engine gets to running temperature. Fill it to within 1/2" of the filler hole. If it doesn't overheat or lose coolant beyond this point stop worrying. if you want to be anal about this fit an expansion bottle and the appropriate radiator cap.  Mungo...what's the deal with the dishwashing liquid? |
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Deleted
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Post by Deleted on Sept 24, 2010 10:41:57 GMT
David, there's supposed to be room for expansion of the coolant when the engine gets to running temperature. Fill it to within 1/2" of the filler hole. If it doesn't overheat or lose coolant beyond this point stop worrying. if you want to be anal about this fit an expansion bottle and the appropriate radiator cap. Mungo...what's the deal with the dishwashing liquid? Dunno... something to do with de-crudding the internals apparently. Out of interest, this is for p5's... 3 litres... that picture is a 3.5 v8. |
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rcoups
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Post by rcoups on Sept 24, 2010 13:00:14 GMT
I think he just wants a 3 litre engine and is showing us what a yank engine looks like...lol
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