How to drive a diesel

Discuss, ask, or get help with engine and mechanical queries in here.

Moderator: Moderators

User avatar
swiss
3.0 24v
Posts: 1000
Joined: Sat Jun 07, 2008 5:34 pm
Location: IM IN UR FACEBOOK ADING TEH STRANGES

How to drive a diesel

Post by swiss »

Hey. The following did not happen. I could never have happened as I always obey the speed limit.

So I was coming back down from that London. Were the M4 flyover opens up from two lanes in to three and goes from 40 to the national limit, I pulled in to the right and stepped on it to begin accelerating. A Merc rushed up behind me and began flashing the brights at me... so I floored it. Suffice to say as soon as the road achieved its third lane, the Merc shot around me and buggered off in to the night. I got up to about 85 and then looked very silly as that was it. Later on, as I experimented with accelerating more gently I managed to top out at about 105.

This will probably seem elementary and naive to experienced drivers here: why is it that when I floor it, I only get a bit of acceleration and then the engine roars and the tacho goes right over, tonnes of smoke appears behind me and yet I barely get any more speed?

How should I be driving in order to keep the acceleration up? I believe my engine sees max torque at about 2200rpm... is this the optimum moment to shift gear?

Additionally, does anyone know the rev/speed range to achieve maximum efficiency in a 1.9 when cruising the motorway? Typically I keep it at 3K/70mph. Unless I'm racing Mercs...

Ta
The man with no car

"Close the door on your way out, and don't forget your monkey."
djp30djp
2.2 16v
Posts: 237
Joined: Sun Dec 30, 2007 4:47 pm
Location: Cark, Cumbria, England

Re: How to drive a diesel

Post by djp30djp »

[quote]This will probably seem elementary and naive to experienced drivers here: why is it that when I floor it, I only get a bit of acceleration and then the engine roars and the tacho goes right over, tonnes of smoke appears behind me and yet I barely get any more speed?
[quote] It's called "Clutch Slip".
406 HDI Exec Estate (2 off) & 307CC HDI Cabriolet
User avatar
steve_earwig
Moderator
Posts: 19813
Joined: Thu Oct 04, 2007 6:09 pm
Location: Jastrebarsko, Croatia http://www.jastrebarsko.hr/lokacija/

Re: How to drive a diesel

Post by steve_earwig »

Sounds like it, the smoke doesn't sound too good either :(
Unskilled meddling sin©e 2007

The submitted form was invalid. Try submitting again.
mark21TD
2.2 16v
Posts: 226
Joined: Wed Dec 17, 2008 10:31 am
Location: Heathrow area

Re: How to drive a diesel

Post by mark21TD »

The wife's 806 HDI used to do the same thing, wouldn't go above 90 with full throttle, but well over that if treated gently :supafrisk: .
Sold on ebay with a slipping clutch in the end :roll:
406 2.1TD GLX estate
Xantia 1.9TD VSX estate
brew my own biodiesel

http://www.shorewasteoil.xtreemhost.com/
User avatar
eoin27
The Irish 406 addict
Posts: 1131
Joined: Fri Nov 30, 2007 2:18 pm
Location: Dublin, Ireland

Re: How to drive a diesel

Post by eoin27 »

that car is capable of around 110 mph when fully repaired.

3rd gear is my fav in the 406. when i'm in third doing about 32mph and the rev counter is sitting on the turbo, i put the foot down and 75 mph is done in one gear. i dont do it that often tho. :oops:

when i'm doing above the speed limit and wankers are driving up my arse and flashing me, i indicate to pull in and then indicate to pull out again without actually going anywhere at all, it drives them mad. 8) i have the power to get to 120 mph but why bother?
2000 D9 Coupé 2.0 SE EW10J4 Scarlet Red - 5 litres of oil gone in 500 miles!!! Time for a new coupe me thinks
teamster1975
Site Admin & Mad Biker!
Posts: 6277
Joined: Sun Oct 28, 2007 8:07 pm
Location: Woking, Surrey

Re: How to drive a diesel

Post by teamster1975 »

eoin272 wrote:when i'm doing above the speed limit and wankers are driving up my arse and flashing me, i indicate to pull in and then indicate to pull out again without going anywhere, it drives them mad. i have the power to get to 120 mph but why bother?
Careful eoin :|
I someone is driving that aggressively they could well clip your car out of spite!
1996 406 1.8LX Got a bad case of hydro lock!
1996 406 Executive 2.0 Turbo XU10J2TE No longer hangin' on in there :(
1997 Honda CB500V
2003 Volvo V40 1.8 GDi SE killed by a nutter in a beemer 5 series
2008 Mondeo 2.0 TDCi Titanium X

"Always look on the bright side of life, dedo, dedo dedodedo"
User avatar
eoin27
The Irish 406 addict
Posts: 1131
Joined: Fri Nov 30, 2007 2:18 pm
Location: Dublin, Ireland

Re: How to drive a diesel

Post by eoin27 »

safety first i suppose. :|
2000 D9 Coupé 2.0 SE EW10J4 Scarlet Red - 5 litres of oil gone in 500 miles!!! Time for a new coupe me thinks
totaleclipse
2.0 16v
Posts: 178
Joined: Sun Feb 22, 2009 10:52 pm
Location: Kilmarnock, Ayrshire

Re: How to drive a diesel

Post by totaleclipse »

i never pull in for em, if i'm in the outside lane, there must be cars in the inside lane, and as long as i'm going faster than them, i should be in the outside, so to hell with impatient people.
1997 2.1TD executive estate - mmmm, lovely :)
User avatar
eoin27
The Irish 406 addict
Posts: 1131
Joined: Fri Nov 30, 2007 2:18 pm
Location: Dublin, Ireland

Re: How to drive a diesel

Post by eoin27 »

totaleclipse wrote:i never pull in for em, if i'm in the outside lane, there must be cars in the inside lane, and as long as i'm going faster than them, i should be in the outside, so to hell with impatient people.
exactly. and there is about fifty cars in front of you all doing the same speed.
2000 D9 Coupé 2.0 SE EW10J4 Scarlet Red - 5 litres of oil gone in 500 miles!!! Time for a new coupe me thinks
teamster1975
Site Admin & Mad Biker!
Posts: 6277
Joined: Sun Oct 28, 2007 8:07 pm
Location: Woking, Surrey

Re: How to drive a diesel

Post by teamster1975 »

eoin27 wrote:safety first i suppose. :|
Becoming a Father changes your outlook on life! :)
1996 406 1.8LX Got a bad case of hydro lock!
1996 406 Executive 2.0 Turbo XU10J2TE No longer hangin' on in there :(
1997 Honda CB500V
2003 Volvo V40 1.8 GDi SE killed by a nutter in a beemer 5 series
2008 Mondeo 2.0 TDCi Titanium X

"Always look on the bright side of life, dedo, dedo dedodedo"
User avatar
Doggy
Mod with a 2.2 HDi, De-Fapped!
Posts: 10710
Joined: Mon Oct 13, 2008 11:49 pm
Location: Northants

Re: How to drive a diesel

Post by Doggy »

These days I tend just to let them go, but I won't get myself boxed in to the left or middle lanes because I let somebody past then can't get out again. The more aggressive they are the longer they tend to wait....
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
User avatar
mjb
Site Admin
Posts: 7983
Joined: Wed May 31, 2006 9:06 pm
Location: Stoke

Re: How to drive a diesel

Post by mjb »

eoin27 wrote:3rd gear is my fav in the 406. when i'm in third doing about 32mph and the rev counter is sitting on the turbo, i put the foot down and 75 mph is done in one gear.
The joys of V6 ownership.... 0-110mph in third 8)

Oh look there's one on ebay for £410 - http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 0310849099 :cheesy:
<steve_earwig> I think this forum is more about keeping our cars going with minimal outlay than giving our cars more reason to go bang
User avatar
swiss
3.0 24v
Posts: 1000
Joined: Sat Jun 07, 2008 5:34 pm
Location: IM IN UR FACEBOOK ADING TEH STRANGES

Re: How to drive a diesel

Post by swiss »

djp30djp wrote:It's called "Clutch Slip".
Right. And is this a function of the way the clutch operates or does it suggest the clutch is getting old and tired?
The man with no car

"Close the door on your way out, and don't forget your monkey."
User avatar
mjb
Site Admin
Posts: 7983
Joined: Wed May 31, 2006 9:06 pm
Location: Stoke

Re: How to drive a diesel

Post by mjb »

swiss wrote:
djp30djp wrote:It's called "Clutch Slip".
Right. And is this a function of the way the clutch operates or does it suggest the clutch is getting old and tired?
It's wallet rapage I'm afraid :( As it gets more worn it'll happen easier and easier until you struggle to move at all

With luck you may have a car where it's possible to change the clutch in situ, but even then expect to pay over £200 for the job. Considerably more if it's a gearbox out job... like mine :cry:
<steve_earwig> I think this forum is more about keeping our cars going with minimal outlay than giving our cars more reason to go bang
trem1
3.0 24v
Posts: 1842
Joined: Sat Dec 31, 2005 2:32 pm
Location: south shields,tyneside

Re: How to drive a diesel

Post by trem1 »

mjb wrote:
eoin27 wrote:3rd gear is my fav in the 406. when i'm in third doing about 32mph and the rev counter is sitting on the turbo, i put the foot down and 75 mph is done in one gear.
The joys of V6 ownership.... 0-110mph in third 8)

Oh look there's one on ebay for £410 - http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 0310849099 :cheesy:
looking at all the jobs done on that one the previous owner must have been a right fussy tw*t :twisted: :twisted: :) :cheesy:


2004 Iron Grey 407se 136bhp......Written Off
2006 Moonstone blue 407 se 136 bhp.....Written off
2006 silver 407 SW..........replacement
Post Reply