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S2000 cooling problems.


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LukeW

Thanks Ian for letting me borrow your pump! 
it’s fitted to the car and bled ready for a test drive tomorrow, if it’s not raining after the F1!

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I would try using a very small amount of light lube on the rubber seal under the cap. I found that mine had so much grip that it was very difficult to tighten the plastic cap properly. I put a very th

But on long leads times, due to numerous businesses wishing to light up the foreheads of customers etc.

Hi Luke,   Rather than disturb yours. Let me check mine which is off the car in the garage. I'll then advise how impeller is fixed to shaft etc.   I should be able to do this tomor

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Ian Kinder (Bagpuss) - Joint Peak District AO
20 minutes ago, CosKev said:

@Ian Kinder (Bagpuss) - Joint Peak District AO

 

Is this the wall that was modified by the BMW rear bumper?😬

 

Not yet...........

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LukeW
Posted (edited)

Right test drive complete before thunderstorms! 

 

@Ian Kinder (Bagpuss) - Joint Peak District AO Spare pump acted the same as my pump. 

 

However i I had the dash light up showing high oil pressure (6.3bar) 

 

this was was coupled with slightly higher wtemps, 

 

it ran over 5 bar oil pressure before dropping to normal 4.2 bar whilst under some load, with this temps began to cool immediately to what i class as normal. 

 

Could this be related!

with the high oil pressure I also noticed oil temps increase to nearly the same as the coolant!

 

So took the car home steady monitoring all oil p oil t and water t

when ever oil p rose the two temps rose with it 

 

Dropped oil and sump when I got home!

nothing obvious to me but I am now out of my depth! 4453DBA2-E2E1-44D5-973F-348D28BD86A5.thumb.jpeg.783d6d42b62dff868c2ed64ece461475.jpeg

F34BC1A4-EC02-4174-801B-50FB046A6095.thumb.jpeg.c7f2036c1507f7e25310d777692b452c.jpeg

 

the oil was changed over lockdown and when it came out looked good clean and free of debris having cover 5500 miles since last change, old filter looked good too! 

 

The above pictures show oil that was dropped today having cover 3000 miles since being changed in March. Again clean free of debris and contaminants!

 

14E9AF54-79E2-4892-AC1F-690AF6085C90.thumb.jpeg.2e626d5fada550196bca62937b4f0c46.jpeg

6C5E48C2-7B48-4313-B2DC-0138F5C8967F.thumb.jpeg.3e4c468efff1be4ac9d454ad37d6e194.jpeg

 

7558C61D-0AEA-4AFC-B499-298A0483CCC7.thumb.jpeg.1e546e244264afc90dff40fc3df45be0.jpeg

 

so the sealant is over hanging the inside edge of the sump, and it’s not all there. 

Is it possible some has broken loose and been dragged into the oil pickup? 

Also noticed the baffle had 4 broken welds but was solid enough in place!

 

Again no signs of debris in the bottom of the oil pan?

 

15E3F253-4111-4021-A44F-B277520B0A6B.thumb.jpeg.3b3aa47a43c35630f3bf9b73e6391c14.jpegE819D546-8C6B-436E-B352-667BEC23A228.thumb.jpeg.001bd6d66190d09632d0fb47caa41a9d.jpegA35F812F-DD73-4611-AEC5-FF426AB5A679.thumb.jpeg.a41b2fa243ffa261584cad9379139b78.jpeg337557B8-9E09-430F-AC0E-DA8DCDC03646.thumb.jpeg.eb305fbb7dd213f1b5e96e396778823b.jpeg49ADA52C-B8E3-4F98-82DF-21FBA0921D58.thumb.jpeg.6b8b8bdb79a636c7a721b5c51a5c49c5.jpegAB14F913-EFC5-4541-8574-A1C6A00D68E7.thumb.jpeg.294404f6b627d7a496a97f33e0b8c927.jpeg

 

to my untrained eye the general condition of what’s left is good. But again the sealant bead is not complete and rather easy to peal off?

 

Have I gone a step to far?

would an oil blockage cause temp issues? 

where do I go next next? 

Is it worth removing the pickup and other related parts to check for sealant causing a potential blockage. 

 

 

 

 

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Dave Eastwood (Gadgetman) - Club Secretary

It’s not so easy to tell from the photos, but there looks an extremely worrying amount of sealant, of an unrecognised type, on the internal edges of the sump joints, and some most concerning gaps, where sealant may or may not have broken away and gone through the pump?

 

id be looking very closely, I think, to see if sealant has actually got where it shouldn’t, or if the gaps are just coincidence.

 

Ive certainly had oil pressure relief valves famed by loose sealant, before now, and an oil pump affected. (One of those lessons learnt the hardway, many, many years ago.) Also one of the reasons I’ll only use manufacturers spec sealants in and around the sump, pump etc these days. (Which in this case, is Hondabond).

 

If it has got where it shouldn’t, you’d usually expect to see some traces in and around the strainer on the oil pick up.

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CosKev

As above,way too much sealer😳

 

Unbolt the pick up from the oil pump and give it a good wash in a tub and see if you get much sealer out of it,looks clean in your pic but you can get quite a lot out of sight👍 

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Ian Kinder (Bagpuss) - Joint Peak District AO

Wow, you're getting deeper into this!

 

@Andy (Sycho) found his baffle plate loose too!

 

@Stu Faulkner also had trouble with his oil pressure relief valve sticking- any tips on checking this out Stu?

 

Given the blobs of blue sealant (which clearly isn't Hondabond!), I'd drop the Vtec solenoid off and check the strainer to see if any has been caught there!

 

I don't think any of this is related to your temp issue, but now you've seen it, you need to check!

 

I think the water temp and over pressure are related as they are both analogue inputs on the Dash2 which will have a common +5V reference and common 0V. Any variation in resistance on any connections on these circuits could impact both readings.

 

I know you've verified the ECU temp to the dash2 temp on your drive, but this doesn't mean the Dash2 is reading correctly when the over temp issues are occurring. 

 

I'd find the pull up resistors in the dash2 retro fit loom and have a wiggle of the wires in this area and see if the temperature pressure values change.

 

Did you notice if your fuel and oil temp values changed when you had the water temp/oil pressure changes?

 

Best regards,

Ian

 

 

 

 

 

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Rush Motorsport

That’s absolutely too much sealer - that’s the exact issue that killed my Duratec - the pickup was completely blocked with it....

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LukeW
55 minutes ago, Ian Kinder (Bagpuss) - Joint Peak District AO said:

I'd find the pull up resistors in the dash2 retro fit loom and have a wiggle of the wires in this area and see if the temperature pressure values change.

I did this before fitting the spare water pump, only on the drive but all the dash values remained constant!

 

57 minutes ago, Ian Kinder (Bagpuss) - Joint Peak District AO said:

Did you notice if your fuel and oil temp values changed when you had the water temp/oil pressure changes?

oil temps did start to rise when high oil pressure was seen, but didn’t notice fuel change.

 

2 hours ago, CosKev said:

Unbolt the pick up from the oil pump

Which bit is this! 
As I said I’m in beyond my mechanical knowledge now so some very daft questions may get asked!

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Dave Eastwood (Gadgetman) - Club Secretary

This is the oil pickup pipe, circled in red.

 

oil strainer.jpeg

 

You can just see through the slot in it, a mesh strainer, to catch larger particles. Unfortunately, broken up sealant can get through.

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Ian Kinder (Bagpuss) - Joint Peak District AO
7 minutes ago, LukeW said:

I did this before fitting the spare water pump, only on the drive but all the dash values remained constant!

 

oil temps did start to rise when high oil pressure was seen, but didn’t notice fuel change.

 

The fuel channel is heavily damped so may not move if it's intermittent. 

 

7 minutes ago, LukeW said:

 

Which bit is this! 
As I said I’m in beyond my mechanical knowledge now so some very daft questions may get asked!

 

@CosKev is generalising. The pick up is built into the pump on a S2000

 

image.png.5aece2983f3a55d9a58c47f8df666f02.png

 

I'd not remove the pump (cam chain and pump chain need removing first). I'd just drop the relief valve out and check in there first.

 

 

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CosKev
34 minutes ago, Ian Kinder (Bagpuss) - Joint Peak District AO said:

@CosKev is generalising. The pick up is built into the pump on a S2000

 

Wow,that's a w**k design👎

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LukeW

 That means the pump cover can’t come off either unless chain removed? 

 

A1771CA5-452B-42B1-895D-EE98148AD64E.thumb.jpeg.09b18dab55f8faff840aecef400fdba0.jpeg

E5F5962F-8887-44A3-89C2-9D32D79698FC.thumb.jpeg.dc5a8a3746280641e0256f54b71f62f3.jpeg

 

with the spring removed but can’t remove the relief valve.

still no sign of crap though 

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LukeW

Pressure relief valve removed

BD4E2BCA-FD36-4DB2-8A5F-3B9AA55CB4A9.thumb.jpeg.cb4ff49b4c7a7e58dad2625aa9cdb790.jpeg

0207FA55-A2AE-4FBA-BE8C-D269E4351CCB.thumb.jpeg.405e4c6918627a65f49da73cb7e35265.jpeg

AA74C2DC-91E5-41AE-AB0D-A3D025FE1DD3.thumb.jpeg.207a4e9ec0529b56c468b0d4fa3fbbd6.jpeg

 

to me looks and feels ok

no visible marking!

 

What’s next? 

 

Will undoing these 3 not allow me to drop the cover? 

27B1F15C-4D42-4C1C-B78B-7ECEC783B6D2.thumb.jpeg.061275e8f1fc2fd232a6aefb09e258ca.jpeg

4323792B-4E5A-4BF1-8C6C-FAACB2D7812C.jpeg

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Ian Kinder (Bagpuss) - Joint Peak District AO
9 minutes ago, LukeW said:

What’s next? 

 

Will undoing these 3 not allow me to drop the cover? 

27B1F15C-4D42-4C1C-B78B-7ECEC783B6D2.thumb.jpeg.061275e8f1fc2fd232a6aefb09e258ca.jpeg

 

Manual section 8-9, suggests not-

 

image.png.fff7091606e58d265bec062bd9696c5f.png

9 minutes ago, LukeW said:

 

 

Given it was 10,000 miles ago, when the sump was sealed with the 'blue sealant', any parts of the sealant that have broken free, are either trapped in oil galleries! or have come out during oil changes without you noticing!

 

 

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