Sedondary injector seems loose

[95lotus]

Should I be able to rotate the secondary injector, or should it be tight? Me thinks it's the latter, and could be the source of a high-pitch whine I hear when I'm off the go-pedal and she's winding down.

thanks,
Bill
'95 S4S

[mikelr]

95lotus said:

Should I be able to rotate the secondary injector, or should it be tight? Me thinks it's the latter, and could be the source of a high-pitch whine I hear when I'm off the go-pedal and she's winding down. thanks, Bill '95 S4S

Bill,

Yes, the secondary injectors can be rotated, this is normal.

Mike
94 S4

[paula&marcus]

Hi Bill,
Mike is right, they can be rotated ... but it also would not hurt to check or replace the O-rings around them ! Maybe one or both is split ...

Cheers
Marcus (www.PUKesprit.de)

[rlearp]

If you've got a leak you'll know it. You should be able to smell some fuel on a hard run and look for an erratic idle due to vacuum leak.

A good way to check for leaks is to spray some WD40 on the suspected area whilst the engine is running. If you get a change in RPM when the WD40 hits the area you've got a leak there. Good old trick. Yes, and there are some drawbacks possible, such as fire etc., but it still works well.

R

[95lotus]

Thanks Mike, Marcus and Ron. Just checking!

I tried the ole WD-40 trick, and no change in RPMs.

thanks,
Bill
'95 S4S

[LotusSE89]

the whine, when the engine is spinning down, you hear is either a belt rubbing on something, or it is a bad t-belt tensioner bearing.

In my case it was the belt walking into the v-belt pulley, and rubbing because of a bad timing belt tensioner bearing.

Check the bearing, look for the belt rubbing on anything. If it is the bearing, buy an SKF.

I'm replacing mine tonight. I went through 2 LKG bearings in 2 years, one was bad in less than 10 miles! Got a new SKF, just like the original Lotus bearing that lasted 50,000 miles.

Travis
Vulcan Grey 89SE
www.lotuscolorado.com/vulcangrey/

[Paula&Marcus]

Hi All,

JFYI do NEVER use sprays that contain silcone for spraying at suspected engine intake leaks !!!
Silicone contaminates the O2-sensor and makes it behave lazy ! The result is incorrect fuelling, running and idling problems and a fault code along with a check-engine light ... !

Cheers
Marcus (www.PUKesprit.de)

[rlearp]

The amount of spray (which I'm not even sure WD-40 has any silicone-based lubricants) used to check for a leak is not going to end up damaging an oxygen sensor, unless someone gets crazy with the spraying.