Rover 216 Coupe lazy throttle response.

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MJ the Tomcat
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Rover 216 Coupe lazy throttle response.

#1 Post by MJ the Tomcat » Sun Jan 29, 2017 1:03 pm

Hi All,

I have a 1998 Rover 216 Coupe with 103,000 miles on the clock. It is a K Series engine which has the triple layer gasket and steel bolts.

Recently I've had a new clutch fitted, new dizzy cap, HT leads, etc, and an engine flush but I've still got the lazy throttle response problem.

The best I way I can describe it is when I blip the throttle the engine responds but without any urgency, it feels as though there is air between throttle pedal and engine, and I get the same result when I blip the throttle from the engine bay.

Apart from this, she's driving fine with no lumpiness or hesitation when being asked to accelerate, just slow to pick up speed.

Any ideas, advice or fixes would be greatly appreciated as I'm constantly being left behind by smaller cars even when I hold the gears for longer than normal to try and catch up!

Many thanks in advance.
1998 Rover 216 Coupe (MJ the Tomcat). Winner of the Rover Sports Register Special Award - June 2014.
2007 Audi A3 2.0 TDi S-Line Quattro.

Previous Rovers : 1992 Metro 1.1S, 1995 214SEi, 1999 620Si.

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1234dist
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Re: Rover 216 Coupe lazy throttle response.

#2 Post by 1234dist » Sun Jan 29, 2017 2:25 pm

How much of a delay,

Physics has something to do with it.
Has to adjust how much fuel is squirted to how much air its received......it is 20yr old tech at the end of the day.
Pastor @ Rover Revival NFP Garage
220 Coupe turbo K785OAT
218 VVC Cabriolet R220OVR
220 GTI M-series J777RAL
75 2.0 CDT P80CJM
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MJ the Tomcat
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Re: Rover 216 Coupe lazy throttle response.

#3 Post by MJ the Tomcat » Sun Jan 29, 2017 4:53 pm

Hi 1234dist,

Many thanks for your quick reply.

Struggles to keep up with modern traffic is a good analogy here, as the acceleration is there but it's definitely not as brisk as it once was.

It's not so much a delay as a sluggish response, it feels as though there is a balloon underneath the throttle pedal when it's pushed down and the response mirrors that. I don't know whether it's a tired spring in the throttle linkage somewhere for example, or perhaps linked to the fuel / air mixture that you referred to. As far as I know the injectors are fine, but then I've never had a car this old with this sort of mileage before.

My garage agrees that the throttle response is lazy but isn't sure at the moment what is causing it.

Does this help?
1998 Rover 216 Coupe (MJ the Tomcat). Winner of the Rover Sports Register Special Award - June 2014.
2007 Audi A3 2.0 TDi S-Line Quattro.

Previous Rovers : 1992 Metro 1.1S, 1995 214SEi, 1999 620Si.

kevinwillis
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Re: Rover 216 Coupe lazy throttle response.

#4 Post by kevinwillis » Sun Jan 29, 2017 5:13 pm

This certainly need looking into as something is not correct that is the mpg like? Get it a diagnostic computer

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1234dist
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Re: Rover 216 Coupe lazy throttle response.

#5 Post by 1234dist » Sun Jan 29, 2017 5:40 pm

It is just a guess, but i think it might even be a blocked (soon to be) cat that might be causing the restriction.

I would also assume the breather pipe might have a fair itof oil in it due to pressure.

Without it being in front of me, can't really go much further, but we have some helpful locals near you.
Pastor @ Rover Revival NFP Garage
220 Coupe turbo K785OAT
218 VVC Cabriolet R220OVR
220 GTI M-series J777RAL
75 2.0 CDT P80CJM
620 SLI P267LOM HONDA
420 GSI Turbo L191CVP

MJ the Tomcat
Posts: 117
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Location: Somerset.

Re: Rover 216 Coupe lazy throttle response.

#6 Post by MJ the Tomcat » Sun Jan 29, 2017 6:55 pm

Hopefully it's not the cat as that was replaced a little over a year ago with a Vauxhall Vectra one adapted to fit, as the Rover cats kept failing within twelve months leading to emissions that wouldn't pass the MoT.

Hadn't thought about the breather pipe though, so that could warrant further investigation.

Many thanks for your thoughts, it's greatly appreciated.
1998 Rover 216 Coupe (MJ the Tomcat). Winner of the Rover Sports Register Special Award - June 2014.
2007 Audi A3 2.0 TDi S-Line Quattro.

Previous Rovers : 1992 Metro 1.1S, 1995 214SEi, 1999 620Si.

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1234dist
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Re: Rover 216 Coupe lazy throttle response.

#7 Post by 1234dist » Sun Jan 29, 2017 7:21 pm

If you have emision issues, adapting something to smother the gases output is not what i would class as a fix.

But hey, i paid £60 for a aerial because the one i had didn't go all the way down :laughing2

I think there may be more underlying issues based around your hesitation and emission issues.
Pastor @ Rover Revival NFP Garage
220 Coupe turbo K785OAT
218 VVC Cabriolet R220OVR
220 GTI M-series J777RAL
75 2.0 CDT P80CJM
620 SLI P267LOM HONDA
420 GSI Turbo L191CVP

MJ the Tomcat
Posts: 117
Joined: Wed Jun 30, 2010 9:15 pm
Location: Somerset.

Re: Rover 216 Coupe lazy throttle response.

#8 Post by MJ the Tomcat » Mon Jan 30, 2017 6:35 pm

Agreed, but it sorted the emissions out and does away with having to have a new cat fitted every year, not at my expense I hasten to add. :cool

Had a look at my Haynes manual last night and it's flagged up a few other reasons that could be causing it that I need to get looked at, one of which mentioned the breather pipe, so I think I'm getting closer to finding out what's wrong and getting it sorted.
1998 Rover 216 Coupe (MJ the Tomcat). Winner of the Rover Sports Register Special Award - June 2014.
2007 Audi A3 2.0 TDi S-Line Quattro.

Previous Rovers : 1992 Metro 1.1S, 1995 214SEi, 1999 620Si.

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Re: Rover 216 Coupe lazy throttle response.

#9 Post by ROVER-25X » Thu Feb 02, 2017 10:03 pm

I'd check the breather too, mine had a slight leak but as dist said it is old tech and mine
has a slight delay when blipping the throttle on idle but it still pulls away well, its located
by the dipstick in the pic below, my breather pipe is blue on that.


Image


I will be converting mine to MEMS3 engine management and get rid of the dizzy drive
to go wasted spark, should run better, drive better, improve the MPG and emissions etc.
The 25X (2001 ROVER 25 1.4 Impression S, fate TBD)
The CX8 (1997 ROVER Cabriolet 1.6 K-Series, Resto Project)
The 25XD (2004 ROVER 25 2.0TD, Track Car ?)
The Parts Bin (2001 ROVER 25 1.6 S)
The ASTRA-DX (2012 VAUXHALL ASTRA 1.7CDTi, Daily Eco Driver)

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Re: Rover 216 Coupe lazy throttle response.

#10 Post by Paul_1978_yorks » Fri Feb 03, 2017 9:25 am

Have you tried new plugs and leads?
Current:
1996-N Nightfire 420 GSi Tourer
2005 Volvo V50 1.8 Sport
Former:
1994-M BRG 214 SEi
1995-N Silver 214 SEi
1995-N Nightfire Red 214 SEi
1995-M Silver 216 SLi
1993-K Caribbean Blue 216 Cabriolet
1990-G White 416 GSi
+ a 25, 45 & 75

MJ the Tomcat
Posts: 117
Joined: Wed Jun 30, 2010 9:15 pm
Location: Somerset.

Re: Rover 216 Coupe lazy throttle response.

#11 Post by MJ the Tomcat » Fri Feb 03, 2017 6:55 pm

Many thanks all for your replies, it's hugely appreciated.

New plugs and leads were fitted recently so that should be that ruled out.

I'm going to try something new that I came across this afternoon whilst talking to my garage. We're going to check the breather pipe and injectors but we're also going to do a smoke test.

I think I might have an interior leak so they're going to fill the interior with smoke using their new smoke machine (saw Edd China do this to a DB7 last year), and when that's done (and hopefully exposed a leak or leaks), they're going to run the smoke machine through the engine and hopefully that will also expose a leak or leaks.

Watch this space!
1998 Rover 216 Coupe (MJ the Tomcat). Winner of the Rover Sports Register Special Award - June 2014.
2007 Audi A3 2.0 TDi S-Line Quattro.

Previous Rovers : 1992 Metro 1.1S, 1995 214SEi, 1999 620Si.

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