replaced fuel filter, now engine lumpy

peelaaa · 3rd April 2019, 21:06

Hi,

did regular service on the cdti a week ago, air,oil, fuel filter and oil.

It was fine for a few days then engine is a bit lumpy at low revs especially when cold. Acceleration is a bit hesitant when cold too. Revs not steady but fluctuating when idling, Its not a massive fluctuation but noticeable on the revs needle.

What you reckon it could be?

marinabrian · 3rd April 2019, 23:14

Quote:

Originally Posted by peelaaa

Hi,

did regular service on the cdti a week ago, air,oil, fuel filter and oil.

It was fine for a few days then engine is a bit lumpy at low revs especially when cold. Acceleration is a bit hesitant when cold too. Revs not steady but fluctuating when idling, Its not a massive fluctuation but noticeable on the revs needle.

What you reckon it could be?

Cheap fuel filter collapsing internally perhaps

peelaaa · 4th April 2019, 07:46

Quote:

Originally Posted by marinabrian

Cheap fuel filter collapsing internally perhaps

it was ok last night leaving work. it is only in morning on first switch on.

Mickyboy · 4th April 2019, 14:04

Did you fit one of those Crosland fuel filters that euros sell, if so replace it with a better quality one, I’ve seen them “self disrupt” cheap parts just ain’t worth it.
Mick

Scott Stephen · 4th April 2019, 14:45

Quote:

Originally Posted by peelaaa

Hi,

did regular service on the cdti a week ago, air,oil, fuel filter and oil.

It was fine for a few days then engine is a bit lumpy at low revs especially when cold. Acceleration is a bit hesitant when cold too. Revs not steady but fluctuating when idling, Its not a massive fluctuation but noticeable on the revs needle.

What you reckon it could be?

I would be double checking all disturbed hoses / connections during the filter swap for security...Any air being introduced would certainly upset things a bit.

peelaaa · 4th April 2019, 20:36

Quote:

Originally Posted by Mickyboy

Did you fit one of those Crosland fuel filters that euros sell, if so replace it with a better quality one, I’ve seen them “self disrupt” cheap parts just ain’t worth it.
Mick

The brand is KNECHT from mister auto

BigRuss · 4th April 2019, 22:04

Some cheap filters are really poor I came across this recently when I fitted one that a customer supplied.

It just wouldn't let fuel through, after 20 attempts to charge the filter it just wouldn't let enough pressure through for it to start.

Refitted the original one and it started after a couple of turns at bleeding it through.

I know yours isn't as bad but I'd try changing the filter for a good quality one and see if things improve

Russ

Arctic · 4th April 2019, 22:45

Use Land rover ones,
https://rimmerbros.com/Item--i-MUN00...saAjSJEALw_wcB

I think DMGRS also supplies these for less.

genuine Rover
https://www.ebay.co.uk/itm/Rover-75-...QAAOSwJBhcYqsr

Spray the connector with some contact cleaner also.

1

2

marinabrian · 4th April 2019, 22:59

Here you go

LINK

Brian

Arctic · 4th April 2019, 23:03

Quote:

Originally Posted by marinabrian

Here you go

LINK

Brian

Brian yes saw that earlier today

I have 8 in stock already that is a bargain though

sometime you can get them in lots of 5 or more

3rd April 2019, 21:06	#1
peelaaa Posted a thing or two 75 cdti 2004 contemporary Join Date: Apr 2008 Location: meath Posts: 1,551 Thanks: 272 Thanked 80 Times in 58 Posts	replaced fuel filter, now engine lumpy Hi, did regular service on the cdti a week ago, air,oil, fuel filter and oil. It was fine for a few days then engine is a bit lumpy at low revs especially when cold. Acceleration is a bit hesitant when cold too. Revs not steady but fluctuating when idling, Its not a massive fluctuation but noticeable on the revs needle. What you reckon it could be?

4th April 2019, 14:04	#4
Mickyboy SERVICING AND DEALER DIAGNOSTICS MG ZT CDTI 135 + & MGZT CDTI AUTO 160 & ROVER 75 TOURER CDTI 160 TROPHY YELLOW Join Date: Aug 2013 Location: Hernebay Posts: 4,331 Thanks: 818 Thanked 2,414 Times in 1,141 Posts	Did you fit one of those Crosland fuel filters that euros sell, if so replace it with a better quality one, I’ve seen them “self disrupt” cheap parts just ain’t worth it. Mick __________________ [SIGPIC][/SIGPIC] T4 Owner Jobs done : new UBP, Spy hole mod, Rear hub(wheel bearing),plenum cleaned and emptied, Inline thermostat fitted,Full service, In car Digital tv/DVD Bluetooth Satnav etc, Replaced UBP, Restored headlights,Fixed airbag connection.replaced HP pump,replaced rear light seals,changed intercooler O rings. Jobs to do: ,replace drivers lock,.[/SIZE]

4th April 2019, 22:04	#7
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	Some cheap filters are really poor I came across this recently when I fitted one that a customer supplied. It just wouldn't let fuel through, after 20 attempts to charge the filter it just wouldn't let enough pressure through for it to start. Refitted the original one and it started after a couple of turns at bleeding it through. I know yours isn't as bad but I'd try changing the filter for a good quality one and see if things improve Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

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4th April 2019, 22:59	#9
marinabrian MG ZT Join Date: Jan 2011 Location: Newcastle Upon Tyne Posts: 20,151 Thanks: 3,565 Thanked 10,837 Times in 5,718 Posts	Here you go LINK Brian