Fitted matched inlets and car wont start

[Jbm172]

Today me and frazjam change my upper inlet on ma phase 2 172. We stripped everything off top inlet and every thing off the bottom one to but decided against changing it untill i get a cup alt setup. Put everything back on fuel rail all hoses throttle body airbox and sensors. Started the car was idoling quite high and reving itself. I drove for five mins and the car cut out. Tried to start it and wouldnt start. Got towed back to frasers. Checked we had connected everything back up properly still wouldnt start so we stripped it down put it all back together still nothing. Also noticed a little oil on the throttle body and induction bend. So we took the inlet off put the original one back on and still the same. It sounds like it wants to start but just wont fire. Anyone had anything like this?

 

[Jay Payne]

Massive air leak i reckon. Did you replace the gaskets?

There is a rubber seal on the bottom of the top inlet that is often forgotten, make sure its not still stuck to your old inlet

 

[Feates172]

Sure fuel line and trottle body plug are connected?

 

[Jbm172]

Changed every sensor, nothing


Unplugged knock sensor and gave it a clean, plugged it in and boom went fine and runs ok lol

 

[Dan519]

ignition leads on the right way?

 

[Djw John]

Had a few texts about this tonight, just to update, oil has pished out of the tb, I reckon it's got to be a breather issue of some sort, possibly the wrong inlet fitted and causing excess crankcase pressure but I'm sure James and Fraser will appreciate more opinions.

 

[Djw John]

ignition leads on the right way?

Been assured that they are. New plugs were put in as well if I remember yesterday's conversation correctly.

 

[Jbm172]

Yeah new plugs aswell going to compare the inlets tomorow and see if theres any difference. And get a camera down the engine and have a look

 

[ben lee]

air leak or possibly when changing it the first time you didnt drop anything into the inlet? might be worth checking the compression.

 

[Jbm172]

Just been down to the car took the breather plate of blew through both ends cant seem to find any blockages :s

 

[Djw John]

But is it breathing into the new inlet ok? Defo chuck the old one back on just to rule it out.

 

[Djw John]

iirc a 182 top inlet looks the same but doesnt have a breather on the underside of it

 

[Jbm172]

All the part numbers were the same and had the breather on it. Will try that and see what happens.

 

[Djw John]

Nowt to lose, might not make any difference but worth a shot

 

[Jbm172]

defanitly been having a browse on here cant seem to find anything :s got a spare engine? lol

 

[Djw John]

Yes. Its us, of course we do.

 

[Jbm172]

could be on the list lol

 

[LiamR172]

Aye 172 and 182 inlets are different.

Revving itself sounds like an airleak as mentioned

Surely it cant be plugs/leads if it ran for a while before cutting out?

 

[Jbm172]

We solved that problem yday but then on the way home alot of smoke from the exhaust and it cut out oil pouring out the throttle body. :s

 

[Jbm172]

Been down to the car to do a compression test the readings were

1. 1.75 bar (40 psi)
2. 0.75 bar (15 psi)
3. 1.5 bar (30 psi)
4. 1.5 bar (30 psi)

dont know what the figures are ment to be but was advised to do this anyone know?

 

[Detail Chris]

It means its double fooked! Sorry mate

 

[Djw John]

Not wanting to offend James but did you do t right? All should be around 160psi or so.

 

[Djw Dave]

Was the inlet shot/sand blasted/powdercoated?

Cleaned out properly afterwards?

 

[Jbm172]

I think i done it properly as i say dont have a clue about these things :/ no offence taking lol
Yeah they were dave.

 

[Djw John]

http://www.cliosport.net/forum/showthread.php?676804-oil-in-inlet