Here's what I was thinking. I've got an old forklift with a Datsun A12 petrol motor which smokes/fumes a little more than I'd like Was going to try a tin of STP stop smoke or similar, but then I thought what if. I removed all the plugs, mixed-up a solution of a squirt of jiff or brasso (mild cutting compound) mixed with solvent or fuel & squirted a teaspoon down each cylinder & cranked it over a few times. Do you think this would hone the bore or free a possible stuck ring & help reduce the smoke? I'm not wanting to pull the motor apart as it would be easier just to replace it. Worth a shot? Anyone had success with quick-fixes? Thanks.
mrfxit,
Aug 28, 6:49am
Fix it. Being in a forklift means it's not going to be doing high rev's on a regular basis but will be doing constant floating revs up & down. Thats hard work on any engine
The only way to reliably stop it smoking is to fit a new set of cylinder rings. Will only be a single day job for that motor & it will make a huge difference. Wouldn't even worry to much about doing any other work to that engine unless it's clearly stuffed.
jmma,
Aug 28, 7:07am
Years ago I held revs on and put some ajax powder down the carb of an old engine, It worked (o:
purple666,
Aug 28, 8:46am
If you have got to try "magic in a bottle" then Nulon do one that looks and pours like honey and is about the only one I have ever found that has any effect at all.
dr.doolittle,
Aug 28, 11:13am
I was wondering something similar. Anyone tried anything else & had sucess?
bowla3,
Aug 28, 12:03pm
I reckon Moreys is the best additive for smokey motors.
intrade,
Aug 28, 7:23pm
Re 1 are you seriose you are taking the pissright I shure hope you do
intrade,
Aug 28, 7:25pm
We don't even know where it burns oil from worn valvstems or rings or to much oil faulty fuelpump membrane would over full the sump
alfred011,
Aug 28, 8:51pm
The A12 forklift engine will have different timing covers to run the hydraulic pump and the carb will have a governor on it , parts cheap at STA.
marte,
Aug 28, 10:47pm
Run it on LPG.
Pouring a abrasive into the engine is not going to make it run better.
howz_that,
Aug 28, 11:01pm
I made a mix of kerosine and brasso and squirted down the carb of a 80s Mazda Famillia paddock hack using an oil can. Cleared up alot of the smoke but not all of it. Depending on what the issue is then it might work.
serf407,
Aug 29, 6:35am
Maybe compression test the engine. Hire a short term forklift while you remedy your forklift if there is a problem.
dr.doolittle,
Aug 29, 12:16pm
I'm pretty sure it's the rings. Just made a mix of Brasso & petrol to squirt down the carb while its running. I'll give it a go tomorrow so's not to annoy the neighbours with the noise & smoke. Will also try a tin of magic whatever from Segedins. I'll post on how I get on after.
pfemstn,
Aug 29, 5:37pm
any one who pours an abrasive down a carby is an idiot. seems like we have a few on here!
dr.doolittle,
Aug 29, 6:20pm
Could you explain why?(in this case)
lookoutas,
Aug 30, 7:32am
Back in 1968, I bought a MkIII engine for my MkI. It had been sitting for a while and the stockcar guy I bought it off suggested dribbling a bit of Brasso down the carb to clean up the bore once I got it running - and I did. Nothing got hurt. Don't know what it did or if it helped.
Know I guy who used to get trips to Antarctica with Gough's to break the Cat's out of being parked up for winter. Virtually involved starting them up etc. Caterpillar have/had an expensive bottle of special Start-up with their label on it, that was squirted into the intake once they fired up. He told me it was Vim!
next-to-normal,
Aug 31, 10:12am
motorup
dr.doolittle,
Sep 1, 8:20am
Well I tried a mix of Brasso & gas squirted down carb. Not much result. Tried Nulon Stop Smoke. Worked good on the weekend but ran it up thismorning & it's back to smokey again. Maybe the premix is a bit rich? (bloody 2 stroke) ;-)
On a serious note; I notice when its running & I open the oil cap smoke pisses out of the top of engine & the revs drop so much it will stall after about 30 secs. Quickly removing & re-fitting the oil cap causes the revs to lower & rise. Why is that?
lookoutas,
Sep 1, 4:01pm
You're letting the compression out!
2sheddies,
Sep 1, 4:12pm
Give it an oil change and a dose of MBL8. it's not the cheapest but it's great stuff. if you use it, make sure to follow the instructions exactly to get the best result.
I had a VW Gti do a similar thing Dr. It was the breather all blocked up. Not sure if you can buy Red-X here but that's the only stuff I would pour in the bores to release the rings if that is the problem ???
mrfxit,
Aug 10, 4:02am
EGR systems do that, (exhaust gas reticulation) Environmental protection systems 95% of vehicles have that system now, some you won't notice because the TPA sensor compensates. Smoke/fumes out the top is rings shot & it's called "blowby" gas's because the combustion gas's are blowing past the piston rings in to the rest of the engine via the sump.
ONLY a new set of rings will fix that.
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