when did your car last have a service? a good oil change and air filter change can go a long way! has the 1.4 been modded at all? the 1.4 engines have been known to be pretty pokey if you thrash them

 

the 1.4 has decat and s/s cat bk if u get me i will drop the oil out on monday and ive got a k+n cone on the end of the inlet and s/s cat bk

 

the 1.4 has decat and s/s cat bk if u get me i will drop the oil out on monday and I've got a k+n cone on the end of the inlet and s/s cat bk

There's a :fail: right there.

 

k series engones usually dont like it if you remove the cat, it likes the back pressure to keep the gasses flowing

is your cone filter right next to the engine? (common place is to put it where the air box was) this will give you less power than if you hadnt bothered, put it someware low down with a flow of fresh air, but wont get wet if you hit a puddle / it rains

 

i will have to get a pipe and a new cone on monday then thanks

k series engones usually dont like it if you remove the cat, it likes the back pressure to keep the gasses flowing

is your cone filter right next to the engine? (common place is to put it where the air box was) this will give you less power than if you hadnt bothered, put it someware low down with a flow of fresh air, but wont get wet if you hit a puddle / it rains

 

Something is seriously wrong if the 1.4 stays anywhere near the 160.

Does it rev freely all the way to the red line through the gears?

 

yea all the way up 2 7000rpm but i think since i got the car the vvc has changed sound ???

Something is seriously wrong if the 1.4 stays anywhere near the 160.

Does it rev freely all the way to the red line through the gears?

 

Already mentioned in previous post were you said about the rolling road results, but i am asking other people who've done it what differnece they've had with them doing it..

 

oh my car is a bit lumpy on tick over like a little bump every few seconds

 

Fuel filter? Check all your leads and plugs too

 

sounds like a missfire? when where your spark plugs / coil packs last replaced?

 

right i dont think its miss firing as engine sounds fine i will order a fuel filter and plugs just in case is there a way 2 test coil pack?? and how do i check if timing out?

 

usually if one of the coil packs is on its way out, it will put your EML on, though that been said, im pretty sure my coil packs are mullered and it isnt bringing the light on, how old is your car, and how long ago (if at all) where the packs replaced?

 

2001 its 498 i think of the line lol i dont know when coil packs were changed and its got 97000 miles on it

 

http://forums.mg-rover.org/showthread.php?t=395705

 

very helpfull thanks

 

they would be doing pretty well if they are the origionals! would your friend with the 1.4 let you swap with his for a day? if the lumpyness stops then its your coul packs, if it continues, then try spark plugs

 

i will ask him maybe he will lol could it be a fault with the vvc controller on top of the head??

 

ok heres a summery of the stuff it could be

air filter
fuel filter
coil packs
plugs
leads
cam timing out
oil change

 

lumpiness could be caused by loads tbh.

my prime suspects would be :

spark plugs
air filter (an open cone wouldnt rob you of THAT much, you should still skin a 1.4 alive)
coil packs
or inlet manifold gasket leaking. do you lose a small amount of coolant?

 

nope ive checked head gasket signs well u can see why i got a bit peed off thou manifold gasket? how would that make a difference?

lumpiness could be caused by loads tbh.

my prime suspects would be :

spark plugs
air filter (an open cone wouldnt rob you of THAT much, you should still skin a 1.4 alive)
coil packs
or inlet manifold gasket leaking. do you lose a small amount of coolant?

 

if the inlet gasket is leaking it could be leaking water into one of your cylinders, causing it to missfire, and in extreme cases, hydrolock and bend a rod, if you are not loosing any coolant then i wouldnt worry about that

 

got some spark plugs earlyer £25 quid :getcoat: i will put them in after i change oil on monday need a pipe now to lower air filter, im also going to nick my friends comp tester for a hour just to be safe

 

right i havnt done a service yet but ive got a plan im off to tipton tomorrow rolling road time
im going to see how much ive lost so then i can get a idea of what is the cause of the problem i will let you guys know what bhp its pushing i hope its more than 100bhp haha

 

A decat definately loses power, I have a vvc in my 200, I dropped the cat off and fitted a straight pipe and it was all noise and no power, my pals 1.6 metro kept up, as soon as I fitted the cat again it left the 1.6 metro standing. put your cat back on

if you find out why your car is lumpy let me know, mine has become lumpy over the last 3 days, I've recently fitted a FSE fuel pressure regulator with and alloy fuel rail and it's only developed since then so maybe I've done something wrong.

 

really if u put fuel rail on and fpr it needs mapping as the fueling changes

A decat definately loses power, I have a vvc in my 200, I dropped the cat off and fitted a straight pipe and it was all noise and no power, my pals 1.6 metro kept up, as soon as I fitted the cat again it left the 1.6 metro standing. put your cat back on

if you find out why your car is lumpy let me know, mine has become lumpy over the last 3 days, I've recently fitted a FSE fuel pressure regulator with and alloy fuel rail and it's only developed since then so maybe I've done something wrong.

 

Remove the FSE as they are pointless on these cars unless you have a fuel pump which has had it and can't reach the required pressure. Highly unlikely.

All that will be happening is that the lamda sensor will see the extra fuelling and the ECU will shorted the injector duty cycle. Basically cutting back the fuel to where it should be.

FSE's have pretty much been irrelevant since we moved away from carbs.

 

the cats still on there even thou i think its buggered ive heard the guy ok he will help you out and even tune it up at a price lol

 

I had it sitting there and it cost me bugger all, its set at the same pressure as a standard FPR so I didn't think there would be any harm in fitting it tbh. If that's causing my problems though then I'll remove it as it makes no difference.
There is only 1 other thing I can find with the car that maybe causing my lump idle... I removed the inlet pipe to the TB and put my hand on the TB and the car still idles, it sucks very hard on my hand and idles at very very low revs but I dont think it should idle at all with no air :/

Edit: there's no extra fuel going through it's set at the same pressure, I was told on another forum by a few people that the std regulators don't tend to stick at the right pressure and vary +/- 0.2 psi whereas the fse will hold the pressure it's set at.

 

Standard ones are as accurate at holding pressure as the FSE. The only reason anyone used them was if when checked with a wide band lamda they were running lean as it wasn't meeting spec.

This is a potential issue for highly tuned K16's but is pretty rare. Mainly a batch of 2001 cars seemed to have suffered.

 

rolling road results!!!!!!

right just got back from tipton and heres the results!
154.6 BHP
122.3 lbf.ft TORQUE

and there was me thinking the car wasnt running right haha

 

Not too bad then, a good service will do it a world of good too if it hasn't had one recently

 

not to bad at all i am still going to service it as it hasnt had 1 since ive had the car

 

Looks like there's only one thing it could be then. The driver :lol:

 

thats what i was thinking lol his car is lowered and mine is not and it was a very bendy road so i think i may have let off lol