1.4 340 running shakey? READ ME FIRST FFS!

B14, B172, B19/200, D16 engine, ignition, cooling, fuel & exhaust system, gearbox, variomatic, final drive... | Tuning: engine swaps, welded diff, clutch upgrades...
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foggyjames
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Post by foggyjames » 08 Feb 2005 11:47 pm

5lab wrote:its possible that the jet was built to cope with this kind of difference.
Jets come in remarkably small size variations - that's why carbs have a narrow band of correct performance (in comparison to mapped FI) on each circuit. You can normally get away with it, but you'll usually lose any power gain you might achieve through extra flow.

cheers

Jmes
VOC 300-series Register Keeper
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Ali
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Post by Ali » 09 Feb 2005 01:56 pm

unfortunately i cant run around the carb and that area with the blowtorch because the car doesnt suffer this problem permanently, just on the drive home yesterday it ran fine, also if the problem was to occur i would have chance to get out and test it with the blowtorch because if it let my foot off the accelerator it would just cut out, other than when this problem occurs the car runs fine, slightly shakes on tickover but pressumed this was expected of a 16year old car!
Ali

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foggyjames
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Post by foggyjames » 09 Feb 2005 02:00 pm

Not really to be expected of a 16 year old car!

When was the last time it had new...
Plugs,
Leads,
Dizzy cap,
Rotor arm,
Fuel filter?

(I can't be bothered to scroll up...) Have you tried attacking it with carb cleaner?

cheers

James
VOC 300-series Register Keeper
'89 740 Turbo Intercooler
'88 360 Turbo Intercooler
'85 360 GLT
'81 343 GLS R-Sport
'79 343 DL
'70 164
...and some modern FWD nonsense to get me to work...

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SteveP
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Post by SteveP » 09 Feb 2005 02:01 pm

Ali.. did you ever get your suspension kit? Haven't seen your car about uni much!

I was talking to DeKay and Foggy about a possible Brum meet... I think Foggy wants to pimp his new audio really ;) What do you think? Also you can show Dave what a red 340 should look like... :)
1989 - Volvo 360 GLT
1985 - Volvo 360 GLS
2008 - Volvo S60 SE Lux

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Ali
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Post by Ali » 09 Feb 2005 02:10 pm

yeah i'll get some pics soon, got round to polishing it at the weekend so its not pink anymore, iv had the last 2weeks off uni for "exam period" so that probably why you havent seen the car, in today though (had to catch the train :cry: thought i spotted you earlier, i'll have to get you to check the volvo next time i drive up to uni in it, see if you can notice any rattles etc!

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SteveP
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Post by SteveP » 09 Feb 2005 02:13 pm

Cool, I'll post something in the Calendar section as something more official! You probably did see me earlier - I came back though after a cut short lecture meaning a 3 hour gap!! Let us know when you drive in next!
1989 - Volvo 360 GLT
1985 - Volvo 360 GLS
2008 - Volvo S60 SE Lux

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Ali
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Post by Ali » 09 Feb 2005 02:22 pm

yeah iv had the same problem, finished at 1030 and next lecture at 2! I'd definately be up for the birmingham meet, as long as the car works at that point in time :( i'll go give the air filter a wobble tonight and see if there's any movement!

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Ali
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Post by Ali » 11 Feb 2005 10:09 pm

today i removed the air filter and gave the carb a good wiggle but definately no movement, took a trip to sureparts (local car parts store) to purchase some carb cleaner, one of the guys came out and took a look round my car, he said he had an old fiesta with a weber double downdraught carb and had the same problem, took it to a garage and had the carb stripped and cleaned 4times but in the end found it was a breather pipe gettin blocked causing the problem, could this be possible on mine?
cheers
Ali

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foggyjames
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Post by foggyjames » 11 Feb 2005 10:35 pm

I've not posted about this yet, but I've finally had my recent poor running fixed. It proved to be mostly down to the baseline mixture being set incorrectly - hence why it was ok on full throttle, but poor when pulling away. It had been set like this for 2-3 years by the garage we've used for 15 years, so I might have to find out why...

This is unlikely to be the case for you, but what I recommend doing is finding someone in your area who has a good reputation, and getting them to do a 'tune-up'. Mobile 'Crypton' tuners are quite common, and this guy did my work from the back of his van (even though it was outside his garage). It cost me £50, but the depth of knowledge and experience was well worth it. Seriously, it's like a different car.

I don't know if you do your own servicing, (ie: the car rarely sees a mechanic) but if this is the case, and if - like most of us - you're no genius mechanic, it might be worth seeking out an engine specialist to tell you exactly what is right / wrong with it, even if you end up fixing it yourself.

Various people told me to replace my spark plug leads, and it was a reasonable suggestion, however the Crypton machine revealed that that would have been £15 wasted. You can end up spending the cost of an expert diagnosis on parts by clutching at straws, and yet you've fixed nothing. Knowledge is power :)

cheers

James
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'89 740 Turbo Intercooler
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5lab
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Post by 5lab » 11 Feb 2005 10:41 pm

yes! breather pipes getting blocked are VERY common on 300s - i've never had one so didnt know the symtoms would be like this thou
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foggyjames
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Post by foggyjames » 11 Feb 2005 10:58 pm

They're very common on anything! Rupert checked mine when my car was running badly, but thanks to my lovely garage, it was pretty clean.

cheers

James
VOC 300-series Register Keeper
'89 740 Turbo Intercooler
'88 360 Turbo Intercooler
'85 360 GLT
'81 343 GLS R-Sport
'79 343 DL
'70 164
...and some modern FWD nonsense to get me to work...

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Ali
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Post by Ali » 12 Feb 2005 02:00 pm

Tried a new idea today, replaced the performance filter for the original because someone suggested that because i'm not gettin any warm air so therefore in the recent cold weather the evaporating petrol could cause very cold jets and cause blockage by freezing? Has anyone else fitted an aftermarket filter to the 1.4 and had problems?

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foggyjames
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Post by foggyjames » 12 Feb 2005 02:07 pm

Carb icing....well it is a problem. Having said that, I have my warm-air pipe bypassed (it was doing nothing as the valve had no guts in it?!), and I don't get icing. I think its unlikely, especially as icing usually occurs 2-3 mins after cold starting, but the engine is far too hot to allow icing once its warmed up.

cheers

James
VOC 300-series Register Keeper
'89 740 Turbo Intercooler
'88 360 Turbo Intercooler
'85 360 GLT
'81 343 GLS R-Sport
'79 343 DL
'70 164
...and some modern FWD nonsense to get me to work...

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Ali
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Post by Ali » 12 Feb 2005 02:34 pm

It just ties in that it has only happened when ive had the performance filter on, i also fitted a large aluminium pipe (10cm diameter) to the induction kit and sealed it and took the other end to the front of the car so it would be gettin plenty of cold air, tested out the thermostat for the cold/warm feed pipe this morning and it took a fair bit of heat to get the flap to change over to the cold feed meaning the car would be running on hot air most of the time. At least by returning it to standard ive eliminated one possibility so i'll let you know how it runs
Ali

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foggyjames
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Post by foggyjames » 12 Feb 2005 02:56 pm

True, and you will also have removed the possibility that the performance air filter's extra flow would make it run lean. This just doesn't 'feel' like an icing problem to me, but as you say,there's only one way to find out :)

cheers

James
VOC 300-series Register Keeper
'89 740 Turbo Intercooler
'88 360 Turbo Intercooler
'85 360 GLT
'81 343 GLS R-Sport
'79 343 DL
'70 164
...and some modern FWD nonsense to get me to work...

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