Problems with 1HDT on SVO

[Dr Mark]

Re: Problems with 1HDT on SVO

Problem is fixed. Replaced the IP with an exchange unit, upgraded to be compatible with an upgraded turbo, and the problem disappeared, but I still don't know why. Then again, I didn't know what was causing it in the first place...

[Captaincademan]

Re: Problems with 1HDT on SVO

The Delphi 296 is a fine filter, but I doubt it will allow enough fuel through? I know I have a different pump in my 1HDFTE. If you do the upgrade and find performance is lacking, swap to the fleet guard ff167A. It has roughly twice the flow. Also run the flow backwards through the filter if you aren’t already, that way the glass bowl gives you a real indication of your fuel condition and your filters will last longer.

[Dr Mark]

Re: Problems with 1HDT on SVO

Yes - it was done by Carmine at Dynamic Automotives up in Balcatta - he's got a 80 series himself - he knows them inside out. When I say it didn't cut off, I mean it almost did. When you turned it off the revs would drop down to about 200 or 300 rpm and it would sit there just chugging slowly. I still can't work out how the metal got in there. Are those delphi CAV filters OK? I checked the specs on them and they seemed OK

[Tony From West Oz]

Re: Problems with 1HDT on SVO

The plot thickens. The cutoff solenoid has been replaced but the engine is still running on when the ignition is turned off. So it's off for a full IP rebuild. Funny thing is that I never had these problems with Toyo IPs when running B100

Mark, has the electrical side of things been checked to be working correctly? It could be a short circuit to a live wire could be the cause.
Easy test, disconnect the wire to the shut down solenoid and the engine should stop.
If the engine continues, then the solenoid is suspect, or there are other things at fault in the IP.

Tony

[Dr Mark]

Re: Problems with 1HDT on SVO

Now the plot thickens even further. Having dismantled the pump, I am told by Kim from Total Fuel in Balcatta that there was metal in it, although he couldn't see where it came from.

It's a complete mystery to me too. The plumbing was that it came in through my shower accessory heat exchanger, then through a Frantz, then through a plate heat exchanger, then through a Delco CAV filter then to the IP. I never experienced and filter blockage issues in either filter, and in any case I can't imagine where the metal would come from anyway.

Anyhow it doesn't matter - I'm upgrading the turbo and part of it is an upgraded fuel pump. So I just send this one away as is and get an exchange unit

[tillyfromparadise]

Re: Problems with 1HDT on SVO

Hi Mark,

The plot thickens... Funny thing is that I never had these problems with Toyo IPs when running B100

Can you be more specific? Do you mean that you think it is funny that you are having this problem with your 1HDT because you never had this problem with a Toyo IP or do you mean you think it is funny that you never had this problem with the Toyo IP because you are having it with the 1HDT IP?

If it is any help, I have never had this problem on any diesel engine.

[Dr Mark]

Re: Problems with 1HDT on SVO

The plot thickens. The cutoff solenoid has been replaced but the engine is still running on when the ignition is turned off. So it's off for a full IP rebuild. Funny thing is that I never had these problems with Toyo IPs when running B100

[tillyfromparadise]

Re: Problems with 1HDT on SVO

SI= Spark Ignition
CI= Compression Ignition

[Dr Mark]

Re: Problems with 1HDT on SVO

Pardon my ignorance but what are SI and CI?

[smithw]

Re: Problems with 1HDT on SVO

Sorry maybe I wasn't clear about ATF in a 2 stroke. I used to fix chainsaws and other small engines, sometimes the owners would mix up there 2 stroke fuel, and they had run out of 2 stroke oil, so they put ATF in instead. It doesnt burn like 2 stroke oil, it just seems to bulid up and makes a mess, thats why I thought it wouldnt burn too well in a diesel.
Water mixed with ethanol will also cool the incoming air, into your engine and you will get a power increase as the air is more dense, anyway there is a great website here
https://www.snowperformance.net/wate...esel-s/190.htm

[Alga]

Re: Problems with 1HDT on SVO

I thought ATF didn't burn very well, Its designed not to burn, that why I thought it would smoke. I've seen people put in a 2 stroke engine and it fouls up the plug, and you end up with an oily mess, so Ive been reluctant to try it. Im alway open to learning somthing new though.
So is ATF use straight? and does it clean the pump and injectors or the combustion chamber?

Have no idea whether it cleans the system or just the chambers, but from my perspective it makes a difference. Have tried it with and without a HE, found it seems to work better when the engine is at operating temps and the HE heats the atf/2stroke. Otherwise there seems no difference in performance. Been using 2 stroke more lately as buy it in bulk for my chainsaws and other stuff, there are two ways of doing it, I have a spare 5.5lt tank under the bonnet of the 1hdt and will use that when doing a full clean out, so the cleanser is not diluted. Or you can put some in the starter tank and it should do a bit of cleaning that way. When I first got the 1hdt, did a clean out with a mixture of atf/2 stroke and it did make a difference to performance.

No way would use it in a SI engine, it would most certainly clog the spark plugs. An IC engine is a compression combustion, not explosive like SI. You can run a CI engine on engine oil or most other oils, but not SI, ever.

[tillyfromparadise]

Re: Problems with 1HDT on SVO

One thing that is quite different between Automatic Transmission Fluid and Diesel fuel is their viscosity.

Diesel fuel in Australia has a viscosity of 2.0 to 4.5 cSt @ 40°C
Mobil Type F ATF has a viscosity of 36.0 cSt @ 40°C

[Tony From West Oz]

Re: Problems with 1HDT on SVO

I thought ATF didn't burn very well, Its designed not to burn, that why I thought it would smoke. I've seen people put in a 2 stroke engine and it fouls up the plug, and you end up with an oily mess, so Ive been reluctant to try it.

In a SI engine, oils will not combust properly. In a CI engine the atomised oil burns well.

Im alway open to learning somthing new though.
So is ATF use straight? and does it clean the pump and injectors or the combustion chamber?

Sorry, never had a big enough supply of it to test it out thoroughly.
As a combustible oil it will work as a diesel fuel.
I use water injection at full throttle to assist in keeping the prechambers and combustion chambers clean.
I stumbled on this after my first Fatmobile suffered a warped head due to loss of coolant. I persisted with the engine, but it was losing coolant at every run. When I took the head off, the combustion chambers either side of the leak were spotlessly clean, compared with the other 2.
I have used water fogging into inlet manifold (for 20 minutes or so) to assist keeping the combustion chambers cool in my Mercedes Diesel cars until I got this car. I commissioned the water injection (WI) about 2 tanks of fuel ago and I can feel the increase in power when the injection cuts in.
I am using a 30% ethanol in water blend in the WI system.

[smithw]

Re: Problems with 1HDT on SVO

I thought ATF didn't burn very well, Its designed not to burn, that why I thought it would smoke. I've seen people put in a 2 stroke engine and it fouls up the plug, and you end up with an oily mess, so Ive been reluctant to try it. Im alway open to learning somthing new though.
So is ATF use straight? and does it clean the pump and injectors or the combustion chamber?

[tillyfromparadise]

Re: Problems with 1HDT on SVO

Hi Mark,

No I'm afraid I haven't been able to find out much information about ATF at all - plenty of information about the additives, but nothing about the base oil.

When I want more specific information about the contents of something, I Just have a look at the MSDS.
For instance, Penrite MHPSemi Synthetic Multi Vehicle Auto Transmission Fluid
https://www.penriteoil.com.au/assets/msds/ATF%20MHP%20(Semi%20Synthetic%20Multi%20Vehicle%20 Auto%20Transmission%20Fluid)%20Rev%207.2%201016.pd f

The base content (Over 70%) is-"Distillates, petroleum, hydro treated, heavy paraffinic CAS# 64742-54-7"
A quick Google of CAS# 64742-54-7 shows it to be-https://chem.nlm.nih.gov/chemidplus/rn/64742-54-7
"A complex combination of hydrocarbons obtained by treating a petroleum fraction with hydrogen in the presence of a catalyst. It consists of hydrocarbons having carbon numbers predominantly in the range of C20 through C50 and produces a finished oil of at least 100 SUS at 100.degree.F (19cSt at 40.degree.C). It contains a relatively large proportion of saturated hydrocarbons."


ANOTHER EXAMPLE- Castrol Dexron III ATF
https://www.grovesindustrial.com/msds/ILU_TRANS.pdf
Base oil - highly refined CAS# 64742-54-7 0- 90%
Base oil - highly refined CAS# 64741-89-5 0-90%
Base oil- highly refined CAS# 54741-88-4/ 64741-89-5/ 64742-46-7/64742-54-7/ 84742-56-9/ 64742-65-0 5- 10%


Then Google the CAS # for more specific information

If you need any further assistance just let me know