chimaera missfire

[chimsmart]

hi guys just want a bit of help with a prob, i have a 4ltr chimaera and have a missfire over 3500 revs the harder i put throttle down the worse it gets. i have changed rotor plugleads distri cap .running smoother but still missfiring havnt got round to changing plugs prob do tomorrow just wonded if any of you have any ideas ,

[MADMAX2]

have you read the label on the sun visor???

[2 sMoKiN bArReLs]

MADMAX2 said:

have you read the label on the sun visor???

Don't park on dry grass?

[Ribol]

Coil?

Try looking around under the bonnet in the dark(with it running), if it looks like Blackpool Pier under there it might give you some clues

[thegman]

have a similar problem which is intermittent - am still investigating. please let me know if you get to the bottom. most recent changes have been plugs and leads and cleaning the stepper. will let you know how i get on

[chimsmart]

thanks for feedback ,its anoying as after i changed leads dist cap rotor arm ect it ran smother on tickover and steady aceleration ,going to change plugs at weekend. dont know weather to look at coil next?

[That Daddy]

chimsmart said:

thanks for feedback ,its anoying as after i changed leads dist cap rotor arm ect it ran smother on tickover and steady aceleration ,going to change plugs at weekend. dont know weather to look at coil next?

I would have changed plugs 1st anyways,that includes any motor with a misfire(generally the cheapest 1st call too)NGK if you please.

[tobeee]

My Chim developed a misfire under load, and it turned out to be a loose plug! Quick tighten and problem solved for free! Hope your fix is as pleasing!

[chimsmart]

so does any one know whats happning with tvr at the moment last i heard was that 2 brothers in america were interested in the company.

[mt10argyll]

chimsmart said:

so does any one know whats happning with tvr at the moment last i heard was that 2 brothers in america were interested in the company.

Ringling Bros (www.ringling.com/)

http://www.ringling.com/

[Johnniem]

Have you tried checking whether the air feed pipe is split. If it is then you will definitely get misfires under load. Try the stuff the others are suugesting too tho'.

[LordGrover]

chimsmart said:

so does any one know whats happning with tvr at the moment last i heard was that 2 brothers in america were interested in the company.

Many ... many topics on this subject. For example click.

[ph1l5]

I had a misfire on Saturday turned out one of the HT leads wasnt on properly.

[T16s]

ph1l5 said:

I had a misfire on Saturday turned out one of the HT leads wasnt on properly.

Hi Phil, I had this just before you picked the car up. I think some of the spark plug extenders could probably do with replacing as they seemed a little loose. Hope she's going nicely otherwise.

[chimsmart]

just changed plugs so all obvious culprits now changed . i gather the air feed pipe in question is the hose from the front valance to the airfilter.i took the car to rpi in norwich and they were v helpful but as they were gettin ready for a show they didnt have time to look at it. read a few comments about cleaning the stepper motor but not sure what that entails. thanks for the sugestions

[v8 racing]

chimsmart said:

just changed plugs so all obvious culprits now changed . i gather the air feed pipe in question is the hose from the front valance to the airfilter.i took the car to rpi in norwich and they were v helpful but as they were gettin ready for a show they didnt have time to look at it. read a few comments about cleaning the stepper motor but not sure what that entails. thanks for the sugestions

Just out of interest how much did you pay for your rotor arm? rob

[chimsmart]

cannot find reciept but think it was £18 got it from rpi with other bits, andy

[v8 racing]

chimsmart said:

cannot find reciept but think it was £18 got it from rpi with other bits, andy

Ok it sounds like a genuine one then? the main reason i asked is because it does sound like an electrical misfire, this is generally a poor aftermarket rotor arm, or your dizzy amplifier, just make sure the rotor says lucas on it, honestly the times people have chased problems due to inferior electrical problems is unbelievible!!

[Chequred Demon]

Hi Chimsmart,

It is a shame RPI didn't have enough time to sort you out., They fixed mine a treat and Chris really knows the Rover V8.

I have been through this before myself and am a qualified auto electrician and obviously have a sorted 1996 400 Chimp as well.

I am 15 mins away from RPI, so If you are near them and have time I could pop over. Email me [e-mail].

[chimsmart]

had another strange thing happen, when starting up from cold the other day the oil light stayed on so i stopped the engine and checked the oil ,it was ok . since then when i cold start the oil light stays on for a little while and no oil pressure is shown. after about a minuite the oil pressure comes up and the light goes out ,it normally runs about the 30 psi but when cold runs higher until engine comes up to temp. the chim certainly has a few niggles l8y should i be worried