pewe
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| posted on 18/2/08 at 10:24 PM |
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Blocked waterway
Having now got the car to the point where I can run the engine for some time (as opposed to turning it over to protect the belts and keep it
lubricated) I have a problem with the auto-choke not knocking off when the coolant's up to temp.
I've tracked it down to a blocked waterway where it comes off the ali. manifold. Have tried a blow-gun without success.
Can anyone recommend how to unblock the waterway by using a Radflush type product or similar before I start stripping it all down? Thanks in
anticipation.
Cheers, Pewe 
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Mr Whippy
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| posted on 18/2/08 at 11:05 PM |
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I'm wondering if something that dissolves lime scale might do the trick or if its ally corrosion maybe an acid cleaner like used on wheels.
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colt_mivec
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| posted on 19/2/08 at 12:15 AM |
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Try Altrans (Alloy cleaner)
Or
Vinegar in the cooling system,It takes limescale off the kettle when you get the water to temp. Then flush it through with a dishwasher tablet for a
bit and drain and fill with nice new coolant
[Edited on 19/2/08 by colt_mivec]
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DarrenW
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| posted on 19/2/08 at 09:08 AM |
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My first pinto block had a blocked waterway. I found it when i had mild cooling issues. Someone recommended removing the plug at base of block and
flush it through - i removed plug and nowt came out. I good poke with screwdriver and then stiff wire had a small trickle. Several probes and flushes
later and a few hours with hose and i got it cleared.
Good motorfactors should stock a good flushing agent. Cant remember the name but £10 for smallish bottle rings a bell. Probs best to flush as best as
poss with plain water first then use the agent and flush out again later. If a waterway is blocked the channel could be quite solid and i doubt if
flush alone will clear it (hence saying to try mechanical and plain water flush first to get rid of the bulk).
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pewe
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| posted on 19/2/08 at 09:23 AM |
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Thanks guys - off the read the fine print on the kettle descaler and dishwasher powder box.
Cheers, Pewe
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