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AuthorTopic: Power loss on 300tdi ?  (Read 1256 times)

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Offline wazza2552

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Power loss on 300tdi ?
« on: October 28, 2007, 00:45:07 »
Need help ! Have a power loss problem on my discovery 300tdi at around 3000rpm it sometimes develops a flat spot ,however when first opened up after gentle throttle she pulls fine ???? any 1 had similar ?
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Offline clodhopper

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Power loss on 300tdi ?
« Reply #1 on: October 28, 2007, 06:56:02 »
have a look at your air filter, that can cause those sort of symtems.
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Offline muddyjames

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Power loss on 300tdi ?
« Reply #2 on: October 28, 2007, 17:41:42 »
mine had serious power loss and after changing my air filter it goes alot better now. Look in my photos for how bad my filter was!
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Rover 620i 223,000 miles on the clock :)
1995 300tdi auto ES Disco. Big Green Giant

Most expensive item for a Disco is????? a round piece of paper stuck on the windscreen!

Offline daveyravey

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Power loss on 300tdi ?
« Reply #3 on: October 28, 2007, 18:50:29 »
OMG that's minging  :shock:
You lazy git   :lol:  :lol:  :lol:
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Offline muddyjames

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Power loss on 300tdi ?
« Reply #4 on: October 28, 2007, 18:52:16 »
I now get 3mpg more and 3p per mile less too.

Lazy, yeah. agree with you on that 1

 :lol:
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Rover 620i 223,000 miles on the clock :)
1995 300tdi auto ES Disco. Big Green Giant

Most expensive item for a Disco is????? a round piece of paper stuck on the windscreen!

Offline lurch_917

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power loss
« Reply #5 on: October 28, 2007, 19:46:11 »
these may sound exstream but if all else fails on high millage ones your egr valve might be sticking remove and clean carbon off ( with parafin or degreaser ) also a cloged cat can have the same affect
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Offline muddyjames

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Power loss on 300tdi ?
« Reply #6 on: October 28, 2007, 21:48:12 »
I am going to do my intercooler one day but didnt realise the egr and cat maybe blocked up too.

The egr on mine is still there but has a knot in the vacuum pipe to in theory block it off.

Mine is a high mileage at 180+k and every litle to bring back its former usefulness power I am going to do!

also red ex for diesels works well but I have been advised not to do 1 dose ful per year.
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Rover 620i 223,000 miles on the clock :)
1995 300tdi auto ES Disco. Big Green Giant

Most expensive item for a Disco is????? a round piece of paper stuck on the windscreen!

Offline street_moto

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Power loss on 300tdi ?
« Reply #7 on: October 29, 2007, 09:21:13 »
Hi, if all else looks fine, it could possibly be the fuel lift pump.
Cheap'ish and easy to replace.
Regards Dave.
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1998 300TDi Discovery


What could possibly go wrong?

Offline Budgie

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Power loss on 300tdi ?
« Reply #8 on: October 29, 2007, 09:55:52 »
I'd also check for delaminated or split intercooler hoses. Take the hoses off and check the insides are still intact (when they delaminate then can partly block the flow of air into the engine), they could also be collapsing if they are a bit old.  :wink:
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Offline Range Rover Blues

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Power loss on 300tdi ?
« Reply #9 on: October 29, 2007, 13:06:07 »
I've just finished doing the heads on 2 300TDis and my sister's needed a new head and injectors as bits were rusted soid into the head.

I don't know about the economy yet (though it will be better when the spill pipe stops splitting :roll: ) but they report the car is definitely "more sprightly" :D

Needs to be after what it cost to do :shock:
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