Car wont go past 5000 rpm

[Mike318i]

I have a problem, My car will not go past 5000 rpm, it wants to but its like something is stopping it.

I changed the Leads, plugs, Dizzy cap, Rotor arm.

Any help would be very much appreciated

[Ant]

air or fuel starvation perhaps dude ??

new filters for both aint gonna break the bank so worth a shot, then if still no good I suspect a duff TPS not sending the WOT signal to the ECU,

Keep us posted Mike

[magnumlove]

That happened on my 316i and i was informed that it was more than likely a worn cam. Apparently its a common problem with the m40 engine?

[Mike318i]

Cheers for the advice Ant

Hope its not a worn cam

I was also thinking it maybe an airflow meter problem?

[Paul325i]

Cam's knackered as above, you need to replace it, probably do the tappets and the oil spray bar at the same time.

[magnumlove]

have a look at this mate


http://www.bmwe30.net/cgi-bin/datacgi/d ... Section=08

[Mike318i]

Is that an expensive job to do paul?

[Paul325i]

Not vastly, you can pick up the parts in GSF to.

[Mike318i]

have a look at this mate


http://www.bmwe30.net/cgi-bin/datacgi/d ... Section=08

Thanks for that mate, it looks like a new cam

[Ant]

do the filters first Mike, you never know, I've fixed "head gaskets" on M62 engines with a new thermostat before

dont give up till all the options are exhausted !

[Mike318i]

Yes mate i will do, Im going down GSF tommorow morning to buy the filters, I have a 318i Touring aswell so i might swap a few bits over to see if any differences are made.

Another thing is that the cars fine from cold?

[johnl320]

you take your car to 5000 rpm from cold??

[Mike318i]

you take your car to 5000 rpm from cold??

Nah mate, only on this occasion to check when it does it. i dont ever take my car past 3000 rpm from cold.

[welshmark]

hi does any one know rough price for this job my 316i been like that for a while and i have changed every thing as well my next call was may be a fault with the fuel pump as now and aagain it seem to loose all power and goes down to about 5 mile an hour before picking up speed again. allways on the m6 as well.

[Demlotcrew]

I would say something like Ԛ£500 all in with parts from GSF and ECP

Andrew

[Simon13]

Isn't the sign of a worn camshaft mean the car won't rev past 5k in 2nd and 3rd gear? For M40's engines

[Ant]

Simon did Scott make to you OK ?

[Simon13]

yes mate he did! Rims look a state but will look great refurbed! Is that welded one straight? can't decide what colour, polish etc when i get them done. suggestions? He moaned it was a hard place to find!

[breitlingboy]

I've got similar symptoms on my M20, is it common on these engines too?

[Brianmoooore]

If the engine is fine when cold, isn't it about time someone mentioned the ECU water temp sensor?

[Mike318i]

I thought a worn camhaft would make a noise? it seems strange why it works fine from cold,

[Jhonno]

Check the airflow meter.. It could be the temp sensor - its at the front of the meter

Does the point in the rev range that it do it change with temperature?

[Demlotcrew]

Okay do this, when the car is warmed up drive it in second right to 5k till it wont go futher, then change to third if the car has a momentary loss of power i can tell you exactly what it is.

Andrew

[Mike318i]

Okay do this, when the car is warmed up drive it in second right to 5k till it wont go futher, then change to third if the car has a momentary loss of power i can tell you exactly what it is.

Andrew

Thats exacly what its doing

mike

[Demlotcrew]

Cam/rockers/tappets are gone for sure 100%

[Mike318i]

I might aswell drop a another engine it in

[Demlotcrew]

Yes a good M20 can be had for little money. The M40 is good engine for its time, but its not worth fixing. Get a M42 in there its much better but you might find that it will cost you alot more than getting a M20 in.

andrew

[Mike318i]

Yer a m20 would be nice, but i need to keep it standard due to insurance costs, So another m40 it is, or just the head

[Simon13]

318is are only one insurance group higher than an 318i, but as Demlot says the engines cost more to buy than an M20