free hit
Coolant loss - Engine/Ancilliaries - The Lotus Forums Jump to content

Recommended Posts

Upgrade today to remove Google ads and support TLF.
  • Replies 2
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

It seems to be a problem indentifying coolant loss (leaking liners) . Is it not possible to have the oil anylised rather than removing the sump and pressure testing the system?

You can also use a chemical test to look for exhaust gasses in the coolant header tank. Usually called a block test.

It is simple and quick to do. Buy the test equipment, warm up the car to open the thermostat, place the blue dye in the test tube (it has a gold catalyst), place the stopper of the test tube in the coolant tank neck, squeeze a bulb to draw air through the test tube. If the blue liquid turns yellow, then there are exhause gasses in the coolant.


Edited by Vulcan Grey


Vulcan Grey 89SE

My Lotus Photo and Projects Album

Link to post
Share on other sites

I guess you have elliminated the usual suspects such as faulty rubber gasket in the header tank cap, leaking hoses, split turbo coolant pipes (my problem) etc etc? Is there mayonaise in the oil filler cap? If it is clean then I doubt you have a major problem such as the liner sealant breaking down. Bear in mind this only happens if the engine overheats badly, as documented elsewhere. fyi, my V8, which hasn't had the liner upgrade, is now over 40k miles with no hint of a liner problem.

While I'm here, my coolant seems to have sand/grit in it. I noticed this before the last service and had the system flushed and refilled. But it's back and has clogged up the level sensor, again. Easy enough to clean out but where is this coming from? It can't be casting sand, left in the system from manufacture, surely not. Any ideas?

Edited by hedgerley
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...