Porsche Enthusiasts Club Forum

'86 924S, 2.5ltr

I need to get the inlet manifold off to clean and inspect all the breather bits associated with the ISV. As far as i can tell the injector rail and injectors don't need removing and the fuel supply lines can stay attatched can't they? All i need is enough clearance to swing it out of the way, i don't want to remove the rail and injectors if i don't have to.

I'd also like to get the oil mist separator off and wash it out with IPA, as it's feeding oily fumes into the breather network which collect in the inlet chamber as oil and generally clog everything up. All this oil gets pulled through and burnt off the first time you boot it up the revs. What sort of a job am i looking at there?

I want to test this little temperature solenoid the sits under the inlet as i think it might be the cause of rich cold running. How's this done? It switches at 58deg i think? Is this thing basically the cold running provision on LE Jet?

Cheers, it's not in bits yet! This is my excuse for not participating in christmas BTW. "sorry, car's bust, i'd love to come round but..."

The answers to all your questions are on Clark’s Garage

Why did you do that? Do you know the answers to my questions? I want to have a conversation about it with someone helpful who understands, that is after all why message boards exist, is it not? I want to hear what people have got to say and be educated by people who've done it before; just showing me the door is a good way to alienate me and make yourself look bad in the process.

I don't believe you anyway. Clark's Garage is not the tree of knowledge, it has basic information on the most common procedures. It is neither interactive, like a message board, nor as knowledgable as posters on a message board.

Not sure I understand your need to rant

The values for the temp sensor tests are on Clark’s

Plus lots of other thecnical information

I have had 90% of my 968 in bits and I did not need to be told word for word how to do it

The workshop manuals are good or would you rather some one just did the job tor free

If your not confident in your ability take it to a specialist, I have helped lots of folk not just with information but visiting them and physically helping with problems

I do not need your sarcasm and I hope someone else has the time for your rants when you don’t get what you want

+1 for Clarks

waylander if you ever fancy a restoration holiday in central Scotland give me a shout

Frustration and being sent away when asking for help.

I'm not testing the temp sensor, i'm testing the temp solenoid on the coolant lines with vac lines either side.

But not whether you can lift the inlet off without disconnecting fuel lines to get clearance to work underneath. Nor does it have information concerning cleaning the oil mist separator.

One days recce is worth two in the field, don't mistake my caution for a lack of ability.

The blue 944 Haynes is abysmal.

Don't mistake my caution for a lack of ability, only idiots rush in. Good, but i'm not in one of those cliques, i'm just a waife who drops in hoping for favourable treatment. I have no access to certain accounts of strip and repair other than to place myself at the mercy of this message board.

It's your business what causality you impose on my postings, and from what arbitrarily guided viewpoint. I will not argue with your accusation of sarcasm on that basis. I will, though, point out that if and when i rant it's my business when and how i do so. In view of the compassion you show other people by helping them physically with their cars, i will respond with equal compassion and offer an apology for any offence caused.

Totally accepted

Now on to serious stuff, I am sure you cannot dismantle the AOS and filling it with cleaner of some sort is your only option

I would go buy all the seals top and bottom for the aos but then the slope starts as when the inlet is removed and the APS it will be the best time to replace the leaking balance shaft seal, dipstick seal and so on, the list grows and grows

With inlet removed the injectors will have missing Pinole caps and require cleaning and so it goes

Visited that area this year. Manifold off. Vac pipes changed, ISV cleaned,injectors cleaned Aos seals replaced. All while I was changing the crank sensor. Delicate bit was the water pipes to the throttle body, those elbows are made of very weak and brittle metal. Yep the Haynes is no use at all but my son downloaded and printed the full online manual which is better but not easy to follow.
You can with difficulty remove the ISV on the S2 without removing the manifold, AOS no chance, crank sensor really difficult. So I bit the bullet and did the whole thing even took the brake master cylinder off to repaint the servo. I took photos of the vac lines as they are like spagetti junction. Little things like 2 spacer washers that go under the fuel rail can cause much frustration.
Taking the fuel rail off is pretty easy complete with the injectors gentle use of a pry bar. The seals and caps are dirt cheap and a local shop cleaned and flow checked them.
Compared to changeing the plug leads on a 993 it's a piece of cake.

this part be very careful, i would personally take the manifold and injector rail off as one part, having been there done that and lost a pintle cap, washer and spacer in number 3 cylinder.

took me two weeks to get the bits out without taking the head off.

O ring Sitting on a valve


Bits of Pintle cap sitting on the piston


and the plastic spacer

One of the end caps was missing off an injector when I pulled the fuel rail. The engine is from a '91 car mine is '89. When the engine was fitted the injectors were changed by the indie that did the swap as they didn't match the EMS of the earlier car. I must admit I was a bit blase about it. Looks like I got away with it. Probably best to remove the manifold and fuel rail as one if that is possible. Not easy but the fuel rail can be removed with the injectors still in the manifold depends which o-ring grips better but if the fuel rail is eased up evenly you shouldn't knock an end cap off.
There wre a few problems after the engine swap which I had to sort out, the polarity of the oil presure sender was reversed somehow and the ISV was stuck. Sorted it myself at the indie garage who was stumped. Thought I'd get the offer of a job.

Seals? Looks like i'll have to postpone whilst i get some. Thanks.