High idle and chuffing noise

[Jeremytb]

I've got a high idle and chuffing noise and Check Engine light after a couple of minutes. Compression is about 90 psi on all cylinders. Any ideas about what I can check next?

IMG_4222.MOV

[Sparky]

Did you intend to post a 1-second movie?  Would love to hear more of that, but what little is there sounds mechanical (pulleys?).  Need lots more info - any history/recent work?  You can try to isolate the noise, carefully,  with a piece of hose.

[CarBuff]

Perhaps an exhaust manifold stud has backed out?  It happens.

[Jeremytb]

27 minutes ago, Sparky said:

Did you intend to post a 1-second movie?  Would love to hear more of that, but what little is there sounds mechanical (pulleys?).  Need lots more info - any history/recent work?  You can try to isolate the noise, carefully,  with a piece of hose.

Thanks for this. I'll try to get a longer recording but this was all I was allowed to upload onto the forum. 

14 minutes ago, CarBuff said:

Perhaps an exhaust manifold stud has backed out?  It happens.

I'll have a look at that. I originally thought it might be a valve burnt, but the compression tests ok. 

[Jeremytb]

I've had a go with freescan and got this info. 

The exhaust sensor was loose but doesn't seem to have improved anything by tightening it up. I guess I should explore the IAC?  

[Sparky]

MAP first; looks like a vacuum hose may be adrift.

[Barrykearley]

Has the car had a flat battery at any point ? As this may need a reset and relearn if it has.

what is the Tps voltage saying on the other tab ?

are you sure the iac valve is fitted tightly and correctly ? I'm puzzled over the chuffing noise. Sounds to me like somethings not tight somewhere

2 minutes ago, Sparky said:

MAP first; looks like a vacuum hose may be adrift.

Nice and easy to test as well ! Any hissing in the cabin areas

[Vulcan Grey]

I'm also thinking a vacuum hose or one of the lines that connect to the intake manifold, like the MAP sensor, Fuel Pressure regulator Tee, or Charcoal canister...

But you didn't mention what Esprit model you have....??

[Jeremytb]

I've had a go with freescan and got this info. 

The exhaust sensor was loose but doesn't seem to have improved anything by tightening it up. I guess I should explore the IAC?  

[Jeremytb]

Sorry I should have said - it's an Turbo SE 1990. I inherited it from my brother about 3 years ago. Initially it ran really rough with not much power and the Turbo working hard. This turned out to be 1 dead and 1 intermittent injector. I managed to get new ones from America and the car then ran better.  General driving was ok but acceleration over 4000 rpm resulted in misfires but it was usable.

It was running ok like this until it had some new plugs and a wheel bearing fitted. Soon after the engine check light came on and the car idled high. Luckily this was only a mile or so from home so hasn't run like this for long.   It's been like this since May but I met Dave (who has a black SE turbo) and this inspired me to have another go at it. He put me in touch with this forum. 

The Cat, BPV and throttle jack are all missing as well.

I have now had a look at the IAC and it was loose. I took it out and the plunger doesn't move. Should it?

[Barrykearley]

It's a stepper motor - it doesn't move unless powered.

does it wobble badly ?

could always sell me the old girl 

[Chillidoggy]

15 hours ago, Barrykearley said:

It's a stepper motor - it doesn't move unless powered.

does it wobble badly ?

could always sell me the old girl 

/\ Ambulance chaser.

[Jeremytb]

Sorry I should have said - it's an Turbo SE 1990. I inherited it from my brother about 3 years ago. Initially it ran really rough with not much power and the Turbo working hard. This turned out to be 1 dead and 1 intermittent injector. I managed to get new ones from America and the car then ran better.  General driving was ok but acceleration over 4000 rpm resulted in misfires but it was usable.

It was running ok like this until it had some new plugs and a wheel bearing fitted. Soon after the engine check light came on and the car idled high. Luckily this was only a mile or so from home so hasn't run like this for long.   It's been like this since May but I met Dave (who has a black SE turbo) and this inspired me to have another go at it. He put me in touch with this forum. 

The Cat, BPV and throttle jack are all missing as well.

I have now had a look at the IAC and it was loose. I took it out and the plunger doesn't move. Should it?

 

MAP elbow at Sensor end was badly perished - at least the designers made it easily accessible ; ). After I taped this up, reset the IAC and idle speed it ran a bit better but still at 1400 rpm. 

Decided to check the IAC again an noticed that injector No 1 was a bit wobbly. Further investigation found that it has fallen apart - hence chuffing noise near the IAC. 

Should I try to find the bits in the inlet manifold?

Can anyone recommend decent injectors?

[fjmuurling]

Something is missing on one injector. Only place it can go is into the inlet manifold. Check if the piece is still in the manifold fitting.

[Jeremytb]

On ‎29‎/‎09‎/‎2016 at 11:18, fjmuurling said:

Something is missing on one injector. Only place it can go is into the inlet manifold. Check if the piece is still in the manifold fitting.

I've checked out the Manifold, Valves and Cylinders with an inspection camera - it looks like the bits have already passed through.

[Qavion]

Quote

Can anyone recommend decent injectors?

Jeremy, I bought a set from WC Engineering for my SE. The writeup sounds good, but I can't say either way if the injectors were better than the old ones (I was doing too many other things to the car at the time).

http://www.wcengineering.com/esprit/fuelinj.html

Cheers

Ian.

[Jeremytb]

On ‎01‎/‎10‎/‎2016 at 02:21, Qavion said:

Jeremy, I bought a set from WC Engineering for my SE. The writeup sounds good, but I can't say either way if the injectors were better than the old ones (I was doing too many other things to the car at the time).

http://www.wcengineering.com/esprit/fuelinj.html

Cheers

Ian.

Thanks for this Ian,  These do look better than the Five-O ones which I bought.  I have managed to track down a few original injectors so hope these will prove to be OK.