lumpy start from cold

[clivvy]

hi chaps,

hoping someone can advise me on this one. Bit of background info first as I think its relevant.

Started using 2 stroke, putting 100Ml to 20 litres of diesel. Been ok, then had top up diesel the other day and add the 2 stroke.

Next morning (cold wet etc) the car started just fine, but ran very lumpy till I revved it a bit, white smoke out he back then all ok. From warm its fine.

Did it again last night after being sat all day at work, then again this morning.

Any ideas what that could be all of a sudden? I assume the 2 stroke is mixing in and working its way through the engine and pump, but unsure if its relevant....

Normal driving appears fine, car does start ok and the glow plugs are fairly new. Car hasn't done this at all until I put in the 2 stroke...

 

[Banshee]

hi chaps,

hoping someone can advise me on this one. Bit of background info first as I think its relevant.

Started using 2 stroke, putting 100Ml to 20 litres of diesel. Been ok, then had top up diesel the other day and add the 2 stroke.

Next morning (cold wet etc) the car started just fine, but ran very lumpy till I revved it a bit, white smoke out he back then all ok. From warm its fine.

Did it again last night after being sat all day at work, then again this morning.

Any ideas what that could be all of a sudden? I assume the 2 stroke is mixing in and working its way through the engine and pump, but unsure if its relevant....

Normal driving appears fine, car does start ok and the glow plugs are fairly new. Car hasn't done this at all until I put in the 2 stroke...

Fuel Starvation or plugs is my shout

Given the impending colder weather, I'd be pulling the plugs out and doing a jump lead test on them, once you have confirmed that they are OK, i'd check for voltage across them with a multi meter while you have someone switching the ignition on and off.

Once you've checked that avenue, if the problem persists, I'd be looking at fuel blockage

 

[clivvy]

cheers Banshee.

Ill check the fuel filter and pipes first, then ill check the glow plugs because I am reasonably sure they are ok, and I am aware that the fuel pipes down near the starter are looking a little ferrous! I just went out to check, looks like surface rust, cant see leaks and it started fine but maybe it needs a lot longer to cool down.

Does the 2 stroke do any sort of cleansing that might affect the filter?

I haven't changed my filter for a while now (less than a year) so might be worth checking that?

 

[Banshee]

cheers Banshee.

Ill check the fuel filter and pipes first, then ill check the glow plugs because I am reasonably sure they are ok, and I am aware that the fuel pipes down near the starter are looking a little ferrous! I just went out to check, looks like surface rust, cant see leaks and it started fine but maybe it needs a lot longer to cool down.

Does the 2 stroke do any sort of cleansing that might affect the filter?

I haven't changed my filter for a while now (less than a year) so might be worth checking that?

Don't be so sure on the plugs, the last invoice I can fine for plugs on my new 04' was from Nissan in March, I tested them a few weeks ago, they were a cheap ceramic set, 3 of 4 had failed!!!!!

I'd def change that filter if it was a year old, the 2 stroke will obviously be a bit stickier than derv but the quantity you use shouldn't make a difference to you as it is a minimal amount.

Reading through it again though and it does sound to me like plugs mate, what's it like to start say 2 hours after a long run when the car is up to temp?

 

[makeitfit]

Glow plugs most likely I reckon :thumbs
Why though do you need 2 stroke oil in diesel ? SVO fair enough, or bio but diesel already has looob

 

[Banshee]

Glow plugs most likely I reckon :thumbs
Why though do you need 2 stroke oil in diesel ? SVO fair enough, or bio but diesel already has looob

Whenever you say lube I am always scarred and a little turned on by that woman in that GIF on your photobucket putting on that pair of latex pants :whip:

 

[makeitfit]

Whenever you say lube I am always scarred and a little turned on by that woman in that GIF on your photobucket putting on that pair of latex pants :whip:

I like her too :naughty

 

[clivvy]

ok Banshee, I hear you, ill check the plugs at the weekend first job and do the filter!

MakeItFit - 2 stroke...ive read so much about it I figured it was the done thing?!?

 

[Banshee]

ok Banshee, I hear you, ill check the plugs at the weekend first job and do the filter!

MakeItFit - 2 stroke...ive read so much about it I figured it was the done thing?!?

I did wonder as I didn't think you ran veg :lol

See you need to start doing what the rest of us do............... ignore anything that Alex posts

 

[micktheshed]

If there is/was some sludge deposits in the fuel system then 2SO will tend to gently clean it out (but not as thoroughly as bio etc. which can cause very bad temporary blockages). However this is the first time I've heard of it possibly causing trouble.

I go along with others on here: change your fuel filter just to be sure, but plugs are most likely to blame.

In case it needs repeating: the whole point of adding 2SO to diesel is to increase lubricity, though in my experience it also gives better (smoother, quieter) running & slightly improved mpg. Not so important with top brand fuels but def. worth adding to supermarket & other 'cheap' (ha, ha) brands.

 

[clivvy]

cheers MIck, yeah im on cheapo Tesco fuel at the moment so figured the 2 stroke was worth a try?

Ill check the filter and plugs at the weekend, I really appreciate everyones help:bow

 

[briggie]

There are a lot of arguments, mostly on motoring forums, about whether or not to add 2 stroke oil to diesel powered vehicles. The main argument is that this will improve the lubricity of the fuel, particularly low sulphur(50ppm/10ppm) diesel.

Sulphur occurs naturally in oil. It is undesirable for various reasons. The main reason is that the sulphur from the exhaust pipe forms sulphuric acid in the atmosphere which results in acid rain. In the vehicle it pollutes the engine oil reducing its life. Using a low sulphur diesel reduces both the environmental pollution and the pollution of engine oil. In order to produce low sulphur diesel, the sulphur has to be removed and the process that removes the sulphur reduces the lubricity of the diesel. Diesel pumps and injectors rely on this to keep them lubricated.

Should I add 2 Stroke Oil to my diesel to improve its lubricity?

In short, you shouldn't. 2 Stroke Oil is designed for 2 stroke motorcycle engines, not 4 stroke vehicles. Vehicle manufacturers and fuel refining companies all agree that running 2 Stroke Oil in fuel is likely to cause complications and there have been reports of engine failures due to 2 Stroke Oil sludging up valves and injectors. As fuel refineries have produced lower sulphur diesel, so too have they added lubrication substitutes to the new diesels to the point that lubrication is now even higher than that of high sulphur diesel.

The vehicle manufacturers don't recommend putting 2 Stroke Oil in your diesel...
The fuel companies don't recommend putting 2 Stroke Oil in your diesel...
The 2 Stroke Oil manufacturers don't recommend putting 2 Stroke Oil in your diesel,
therefore logic dictates that there is no reason to put 2 Stroke Oil in your diesel!

Better lubricity, cleaner burning fuel, cleaner oil and cleaner air means there is no reason for any vehicle to run 500ppm diesel instead of 50ppm, nor to add 2 Stroke Oil to aid in lubrication.

 

[terrano bob]

good post briggie :clap :thumbs

 

[Blocky10]

I like her too :naughty

HEY.... Join the q. I'm first.

 

[makeitfit]

HEY.... Join the q. I'm first.

too late :kiss:

 

[AlexD333]

See you need to start doing what the rest of us do............... ignore anything that Alex posts

blaspheme :naughty


On a Serious note though this thread has me thinking about 2 stroke oil, I dfinatley add too much, the engine did sound better for it though :nenau

 

[clivvy]

what makes you think you add too much?

something negative?

 

[clivvy]

hmm, my car was perfectly fine this morning.

I wonder if MIck is on the money with his suggestion that small amounts of gunge have been cleaned up and pushed through the engine, causing the lumpy starting?

Ill check the filter to try and confirm...

 

[R1cho]

i always start with the simplest and cheapest options :lol so i would change fuel filter first and then move on to the next thing

 

[clivvy]

i always start with the simplest and cheapest options :lol so i would change fuel filter first and then move on to the next thing

I hear ya!