Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > 300/66 Series General

Notices

300/66 Series General Forum for the Volvo 340, 360 and 66 cars

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

340 1.4 rough ans slow idling

Views : 53460

Replies : 219

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Jun 13th, 2021, 19:29   #81
Two340'sman
Member
 

Last Online: Mar 19th, 2023 20:39
Join Date: Apr 2010
Location: London
Default

I'm afraid that I use weed killer. I keep the two cats away when I do.

Asda petrol usually.
Two340'sman is offline   Reply With Quote
The Following User Says Thank You to Two340'sman For This Useful Post:
Old Jun 13th, 2021, 21:54   #82
Laird Scooby
Premier Member
 
Laird Scooby's Avatar
 

Last Online: Today 21:57
Join Date: May 2012
Location: Lakenheath
Default

Quote:
Originally Posted by Two340'sman View Post
I'm afraid that I use weed killer. I keep the two cats away when I do.

Asda petrol usually.
Asda petrol used a weedkiller, hmmmmm, sounds about right!

Joking aside, would that be the 95 octane stuff?

It's not always possible to keep my hound away from whatever is growing, also there are resident wild hedgehogs and neighoburs cats often come through the garden (except when the hound is out!) so it's the old fashioned way for me or fire. Fire can get out of hand so i have to be careful where i point the blowtorch!
__________________
Cheers
Dave

Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........
Laird Scooby is offline   Reply With Quote
The Following User Says Thank You to Laird Scooby For This Useful Post:
Old Jun 13th, 2021, 22:43   #83
Clan
Experienced Member
 
Clan's Avatar
 

Last Online: Today 22:26
Join Date: Jun 2007
Location: L/H side
Default

Quote:
Originally Posted by Laird Scooby View Post
That's sounding suspiciously like blocked jets, see how it goes over the next few days which should give the meths time to work as well. Usually works fairly quick on injection engines but they have a fuel return so it gets mixed into the fuel more quickly.
so does the 340 👍
__________________
My comments are only based on my opinions and vast experience .
Clan is offline   Reply With Quote
Old Jun 13th, 2021, 22:47   #84
Clan
Experienced Member
 
Clan's Avatar
 

Last Online: Today 22:26
Join Date: Jun 2007
Location: L/H side
Default

Quote:
Originally Posted by Two340'sman View Post
Too hot for me today, just checked oil and coolant, both look OK, no coolant in oil, no oil in coolant.
B14 head gaskets don't "Go" unless you have badly overheated them ,however old they are .... top quality parts ..

Are you sure the vacuum pipe for the breather T piece isn't cracked and leaking air especially at the heated flange under the carburettor ?
__________________
My comments are only based on my opinions and vast experience .
Clan is offline   Reply With Quote
The Following User Says Thank You to Clan For This Useful Post:
Old Jun 13th, 2021, 22:50   #85
Two340'sman
Member
 

Last Online: Mar 19th, 2023 20:39
Join Date: Apr 2010
Location: London
Default

Quote:
Originally Posted by Laird Scooby View Post
Asda petrol used a weedkiller, hmmmmm, sounds about right!

Joking aside, would that be the 95 octane stuff?

It's not always possible to keep my hound away from whatever is growing, also there are resident wild hedgehogs and neighoburs cats often come through the garden (except when the hound is out!) so it's the old fashioned way for me or fire. Fire can get out of hand so i have to be careful where i point the blowtorch!
Just Asda unleaded, not sure what the quoted octane is.
Two340'sman is offline   Reply With Quote
The Following User Says Thank You to Two340'sman For This Useful Post:
Old Jun 13th, 2021, 22:54   #86
Two340'sman
Member
 

Last Online: Mar 19th, 2023 20:39
Join Date: Apr 2010
Location: London
Default

Quote:
Originally Posted by Clan View Post
B14 head gaskets don't "Go" unless you have badly overheated them ,however old they are .... top quality parts ..

Are you sure the vacuum pipe for the breather T piece isn't cracked and leaking air especially at the heated flange under the carburettor ?
The one that goes from rocker cover to air filter etc? Years ago this was damaged, I made up a replacement, that looked OK.

I'll check it again.

Last edited by Two340'sman; Jun 13th, 2021 at 22:56.
Two340'sman is offline   Reply With Quote
Old Jun 13th, 2021, 23:04   #87
Laird Scooby
Premier Member
 
Laird Scooby's Avatar
 

Last Online: Today 21:57
Join Date: May 2012
Location: Lakenheath
Default

Quote:
Originally Posted by Two340'sman View Post
Just Asda unleaded, not sure what the quoted octane is.
That'll be 95 octane then. Maybe less if the fuel suppliers can get away with it. Try running it on BP Ultimate instead (make sure you get the petrol Ultimate and NOT the Diesel Ultimate!) as i think you might just be surprised how much better it runs.

There have been many PRV V6s (the earlier ones with more Renault involvement) that have run like a bag of spanners and then better petrol was used and hey presto, no more problems! I know my B280E doesn't like supermarket fuel, i won't use Tesco fuel except in dire emergencies as it killed at least 2, possibly 3 Lambda sensors in short order on my other beast and only returned about 2/3 of the economy it should have done. I've tried Shell V-Power, was good when it first came out, now as bad as supermarket fuels.
Also my other beast doesn't like supermarket fuels either, returns much better running, economy and power on BP Ultimate. Could be something as simple as that on yours.

Worth checking that T piece as Clan advised, i thought you'd already checked for air leaks though?
__________________
Cheers
Dave

Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........
Laird Scooby is offline   Reply With Quote
The Following User Says Thank You to Laird Scooby For This Useful Post:
Old Jun 13th, 2021, 23:14   #88
Two340'sman
Member
 

Last Online: Mar 19th, 2023 20:39
Join Date: Apr 2010
Location: London
Default

Quote:
Originally Posted by Laird Scooby View Post
That'll be 95 octane then. Maybe less if the fuel suppliers can get away with it. Try running it on BP Ultimate instead (make sure you get the petrol Ultimate and NOT the Diesel Ultimate!) as i think you might just be surprised how much better it runs.

There have been many PRV V6s (the earlier ones with more Renault involvement) that have run like a bag of spanners and then better petrol was used and hey presto, no more problems! I know my B280E doesn't like supermarket fuel, i won't use Tesco fuel except in dire emergencies as it killed at least 2, possibly 3 Lambda sensors in short order on my other beast and only returned about 2/3 of the economy it should have done. I've tried Shell V-Power, was good when it first came out, now as bad as supermarket fuels.
Also my other beast doesn't like supermarket fuels either, returns much better running, economy and power on BP Ultimate. Could be something as simple as that on yours.

Worth checking that T piece as Clan advised, i thought you'd already checked for air leaks though?
Yes, did check for air leaks, but worth checking again. I had thought about where I was going to top up from when tank is even lower. Some petrol stations around here have closed, I suppose electric cars may have something to do with it.
Two340'sman is offline   Reply With Quote
The Following User Says Thank You to Two340'sman For This Useful Post:
Old Jun 22nd, 2021, 22:12   #89
Two340'sman
Member
 

Last Online: Mar 19th, 2023 20:39
Join Date: Apr 2010
Location: London
Default

Sorry that I've not been on here to report back earlier.

I don't use the car much and wanted to get the tank very low on petrol.

I got it down to the petrol warning light coming on, and then a bit further.

On Sunday I put in about 4 gallons of petrol that was stored in cans, mainly for the lawn mowers (two ancient Flymo 2 strokes).

I ran the car very briefly, did not notice much difference.

But today, did a about 7 miles through traffic, stop start, the car performed perfectly.

Asda have come back to me claiming that there was nothing wrong with the petrol I bought.

At this moment, I am about 98% sure that it was contaminated petrol. Coincidentally, the bad tickover happened just after I filled up at Asda.

The next use of the car will be on Saturday, I'll report back.

Had a look for the Analogue Gunsons CO meter, not found it as yet!

Many thanks to all.
Two340'sman is offline   Reply With Quote
The Following User Says Thank You to Two340'sman For This Useful Post:
Old Jun 22nd, 2021, 22:38   #90
Clan
Experienced Member
 
Clan's Avatar
 

Last Online: Today 22:26
Join Date: Jun 2007
Location: L/H side
Default

Quote:
Originally Posted by Two340'sman View Post
Sorry that I've not been on here to report back earlier.

I don't use the car much and wanted to get the tank very low on petrol.

I got it down to the petrol warning light coming on, and then a bit further.

On Sunday I put in about 4 gallons of petrol that was stored in cans, mainly for the lawn mowers (two ancient Flymo 2 strokes).

I ran the car very briefly, did not notice much difference.

But today, did a about 7 miles through traffic, stop start, the car performed perfectly.

Asda have come back to me claiming that there was nothing wrong with the petrol I bought.

At this moment, I am about 98% sure that it was contaminated petrol. Coincidentally, the bad tickover happened just after I filled up at Asda.

The next use of the car will be on Saturday, I'll report back.

Had a look for the Analogue Gunsons CO meter, not found it as yet!

Many thanks to all.
how old was that fuel you had in the tank ?
__________________
My comments are only based on my opinions and vast experience .
Clan is offline   Reply With Quote
The Following User Says Thank You to Clan For This Useful Post:
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 23:36.


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.