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Old 09-07-2019   #16
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Re: Abarth with performance issues..Can't figure it out.

Sounds like a air leak on the exhaust manifold.
Either on the head or 5 in 1 gasket creating havoc on Lamda readings for ecu calc.
Can also be your cam sensor.
Check if your timing belt Tensioner are still on the correct mark.
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Old 05-08-2019   #17
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Hi guys,

So the car went to the diagnosticscenter.. Turns out (apart from my ussual problem) the intake manifold has a leak somewhere, they couldn't tell me exactly where the leak is unfortunatly.. Also they immediately started throwing prices of a new manifold! Wayy to expensive for me haha. It should be fixable right? Now I would like to take the intake off the car, the only problem I have is how to release the pressure from the injectorrails. I know there is a fitting for a special tools... Is it possible to do this? Or do you need special equipment?

Cheers

Robert
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Old 05-08-2019   #18
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Re: Abarth with performance issues..Can't figure it out.

The pressure in the fuel rail should disappear once the car has stopped for a while. The only times I've dismantled it, just normal petrol leakage came out.

Don't disconnect the rail with a hot engine though, in case the 2.4 does something unusual..
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Old 05-08-2019   #19
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Quote Originally Posted by Ralf S. View Post
The pressure in the fuel rail should disappear once the car has stopped for a while. The only times I've dismantled it, just normal petrol leakage came out.

Don't disconnect the rail with a hot engine though, in case the 2.4 does something unusual..
Hi Ralf,

Aha that is great news! Thanks for replying Do I need to take off the fuelsystem pressure or...? I really am in the dark here, It's so crowded in there hahaha. Last week my coolantreservoir bursted -,-. Replaced that one now. Now I need to figure out how to get the coolantsystem air free. Just in case I ordered new coils, all five of them. Just feels good replacing them.

Cheers all!

Robert
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Old 06-08-2019   #20
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Re: Abarth with performance issues..Can't figure it out.

I'm not familiar with the 5-cylinder but usually a fuel rail has some "legs" that bolt to the cylinder head.

The injectors are pressed between the injector rail and the inlet manifold.. they're only held in place by an O-ring at each end.. but because they're longer than the gap between the head and the injector rail, they can't fall out.

To remove the injectors, you just unbolt the fuel rail "legs" and then lift the rail off. Some of the injectors may come out with the rail and some might stay in the inlelet manifold.. but they just pull out of each socket, regardless. Just make sure that when you remove the injectors (or they fall out) that you catch any seals, gaskets or o-rings... but usually the O-rings stay on the injectors (one at each end).

Bleeding the cooling system is quite simple. You probably only have a bleed screw on the back of the radiatore. It will be on one side or the other, at the top but on the back of the radiator (inside the engine compartment, facing the engine).

With a cold engine, just unscrew the bleed screw slowly until it starts to wobble and either gas or coolant comes out. *Don't be in a rush..* If you unscrew the bleed screw too far it will fall out, followed by coolant pissing all over the place. You won't be able to get the screw back in while coolant is splashing about. It's funny if you're watching your mate trying to do it.. but very messy (antifreeze is sticky) and expensive.

Once coolant comes out, the radiator is bled. Just tighten up the screw, dry everything and then top up the reservoir. That's it.

Usually I drive around a bit to warm the car up and make sure all the gas is out. Turn the heater to MAX to help the pump push air out of the heater matrix. Otherwise the system is self-purging... all the gas ends up in the header tank without you needing to do anything.

When it's cooled down again, bleed the radiator one more time (should be no air.. but best to check it) and then top up the reservoir again.


Ralf S.
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Old 06-08-2019   #21
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Re: Abarth with performance issues..Can't figure it out.

Quote Originally Posted by RobertV1991 View Post
the only problem I have is how to release the pressure from the injectorrails. I know there is a fitting for a special tools... Is it possible to do this? Or do you need special equipment?
Pull the fuel pump fuse (F21 in the engine compartment fuse box) while the engine is running.
.
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Old 3 Weeks Ago   #22
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Re: Abarth with performance issues..Can't figure it out.

Hey guys. I am also having the same performance issue. Car feals sluggish and my exhaust tip gets black all the time. So I hope someone has figure it out what our problem is haha
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Old 3 Weeks Ago   #23
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Hi all,

I'm back again.. The problem hasn't been resolved yet. I can't seem to pinpoint the problem with the intakemanifold. Can't find the leak! Today I hooked up MES again, and it showed both lambdas are giving the wrong values.

I think I need to take it to a garage and let them have a go at it again. Frustrating as hell!

Greetz
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Old 2 Weeks Ago   #24
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Re: Abarth with performance issues..Can't figure it out.

If you know somebody with a party smoke machine type device you could use that to blow smoke into the inlet may not work very well through as you'd probably not be able to direct it very well

Have seen garage's do this allthrough with a slightly more speclised machine design for cars
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Last edited by chris3234; 2 Weeks Ago at 14:35.
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Old 2 Weeks Ago   #25
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Quote Originally Posted by chris3234 View Post
If you know somebody with a party smoke machine type device you could use that to blow smoke into the inlet may not work very well through as you'd probably not be able to direct it very well

Have seen garage's do this allthrough with a slightly more speclised machine design for cars
Hi Chris3234,

Sunday we did a smoke test on the inlet through the carterventilation on top of the manifold. We did see some smoke showing between the 2nd and 3rd cilinders, but we couldn't quite see where it was coming from.. So today, we removed the entire inletmanifold.. But hey! No leaks were to be found.. ANYWHERE!! We are stumped.. We put some pressure on the (plastic) manifold and only with some real pressure, some bubbels were showing on the little plastic lockings that are holding the unit together.. But only very very little ones. Those can't be the problem can't they? The only thing I can do now is putting it all together again and hope for the best... Or do you guys have any last thoughts?

Thanks all for the feedback so far! I really appreciate it!

Greetz,

Robert
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Old 2 Weeks Ago   #26
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Ok guys, I manager to put everything together again, and it feels like a different car. The performance hasn't returned unfortunatly, but the Rpm drop issues when pulling to a stop are resolved! Seems like cleaning every bit like the intakemanifold, throttle body etc did the Job! Also the car drives smoother and less clonky

Still, I want my power back. Is there a way to check if the lambdas are ok? I should I just buy 2 new ones? It can't be that both lambdas are broken right? Iv'e already replaced the 'below cat' once.. Didn't make any difference.

Greetz all!

Robert
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Old 2 Weeks Ago   #27
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Re: Abarth with performance issues..Can't figure it out.

Check voltage of both lambdas in MES, go to graphics and record them while driving. Voltages should be changing between 0.1v-0.9v.
If one of them is not changing its because is not working properly. Replace it.

You can save the graph and upload it here.
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Old 2 Weeks Ago   #28
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Quote Originally Posted by astacheva View Post
Check voltage of both lambdas in MES, go to graphics and record them while driving. Voltages should be changing between 0.1v-0.9v.
If one of them is not changing its because is not working properly. Replace it.

You can save the graph and upload it here.
Hi Astacheva,

I will do that! Thanks for your response Maybe today ik tommorow. I will let you know the results!

Greetz
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