Topic: What have i gone and done now....... (Read 4089 times)

Tank · « **on:** March 02, 2011, 12:10:13 AM »

Are you sitting comfortably? Then i`ll begin.As some of you will know,i had a diesel Landcruiser which i decided to get rid as it had some issues.Thought i got a good deal as with the money i bought another Landcruiser and that F50 as well.Heres where the trouble begins.Went to see the Landcruiser on Saturday.Its a rare 4.0 litre 80 series with LPG fitted.Got it at a steal or so i thought.Picked it up tonight and all was great,flying down the motorway doing 60 towing my van behind.130 miles without a hitch,then almost as soon as i got on the M5 there was like a backfire and then sort of coughing and spluttering.I was on gas at the time,and had put over 50 litres in,but just in case i was running out i switched to petrol,still same,like fuel starvation and back firing.Pulled over onto hard shoulder and car would then rev ok,apart from a bit of a flat spot.Soon as i pulled away it would be hesitant and powerless.Managed to get up to J1 with coaxing,so off the motorway.Pulled into layby and again,would tick over relatively ok and even rev up but as soon as you put it under load it plays up.Rac man came out but was not really able to do anything so just followed me home,coughing and spluttering,back firing and missing at every slightest application of load.He did mention tps but anyone else have any ideas?? Does it on petrol or gas.Any help gratefully received

Warthog · « **Reply #1 on:** March 02, 2011, 01:52:55 AM »

Maybe of some use:

If LPG is backfiring, It could be either plugs/leads worn - you do need LPG compatible plugs/leads as they are under more strain (burns much hotter)

Other common problem is the Lambda sensor. These take a battering due to the hotter running, and don't tend to last that long. This knocks out the fuel delivery and causes the back fire. This would duff up the petrol side of the sytem too.

JamesH · « **Reply #2 on:** March 02, 2011, 09:13:22 AM »

Would be sensible to check/change ignition parts, my XJ has symptoms similar but nowhere near as bad when parts are getting old.

Tank · « **Reply #3 on:** March 02, 2011, 01:25:10 PM »

Thanks guys,an idea of places to start,keep the ideas coming if you think of something else to try

carljh · « **Reply #4 on:** March 02, 2011, 02:35:34 PM »

does sound like the sensor side of things to me. what do the plugs look like?
mate had a explorer running on gas, when he did his plugs they were so old the gap had opened up to about 90 thou!
still ran ok tho which surprised me when i saw them!

Tank · « **Reply #5 on:** March 02, 2011, 02:39:04 PM »

Havnt even looked yet....still too busy sulking and feeling sorry for myself today

Dave69 · « **Reply #6 on:** March 02, 2011, 09:34:37 PM »

has the timimg altered ?

Tank · « **Reply #7 on:** March 02, 2011, 11:18:08 PM »

Is it possible fro the timing to alter by itself just like that Dave???

Tank · « **Reply #8 on:** March 02, 2011, 11:18:50 PM »

Having said that,if it was timing wouldnt it idle badly too???

Warthog · « **Reply #9 on:** March 03, 2011, 12:37:25 AM »

Another common LPG backfire cause is the wrong air mix. This can be caused by air leaks in the inlet system so check the inlet manifold and tubing for a good seal.

I would firstly get it running on Petrol and worry about LPG afterwards.

Check all pipe work for splits etc, The backfire would of unsettled any number of pipe joints leading to and from the inlet manifold. As im assuming you have a single point system which just chucks LPG in with the air mix going through the Inlet manifold.

If your engine has a MAF sensor or Air flow meter of sorts it could be the cause of ya troubles. Especially as its having troubles on petrol and LPG.

ATB
Mark

Im no expert Tank, just ran an old range rover that had a few teething troubles with.

Tank · « **Reply #10 on:** March 03, 2011, 02:03:27 AM »

Thats ok Mark i appreciate any help,and yes i think it does have a air flow meter.I will get around to having a look soon i hope,if it stays dry

Bubba · « **Reply #11 on:** March 03, 2011, 08:44:24 PM »

any pics of this truck dood and can you not pull some codes of it i had simaler problem with diese; i had it was crank sensor go fifty miles or so then ran like a bastard

Tank · « **Reply #12 on:** March 03, 2011, 09:42:19 PM »

Will get some pics up maybe tomorrow as bit dark now.I dont even know if i can get codes from it as its a 1992 truck Kev

Bubba · « **Reply #13 on:** March 03, 2011, 09:53:26 PM »

so was mine rob looked it up on line and found them

Tank · « **Reply #14 on:** March 03, 2011, 09:56:50 PM »

Oh on your Prado? Will have a look then,cheers Kev

Tank · « **Reply #15 on:** March 04, 2011, 05:25:35 PM »

Heres some pics
[attachment=1][attachment=2][attachment=3][attachment=4][attachment=5][attachment=6][attachment=7][attachment=8]

Panic mechanic! · « **Reply #16 on:** March 04, 2011, 06:07:39 PM »

single point and I would say badly installed for a start. can you drive it at the moment? Would it make it to mine?

Bulldog67 · « **Reply #17 on:** March 04, 2011, 06:21:43 PM »

if he cant drive it he can always bump it on to his shoulder and carry it

Tank · « **Reply #18 on:** March 04, 2011, 06:56:22 PM »

Quote from: Panic mechanic! on March 04, 2011, 06:07:39 PM

single point and I would say badly installed for a start. can you drive it at the moment? Would it make it to mine?

I started it up today and it started ok.Dont see no reason why it wouldnt make it as it drives,just struggles on hills and under acceleration etc

isle of man · « **Reply #19 on:** March 04, 2011, 07:01:50 PM »

This would be a ignition problem Toyota is not my bag but the symptom is definitely ignition, leads, coils, pick-up, plug?

?

carljh · « **Reply #20 on:** March 04, 2011, 07:12:03 PM »

best not driving it too far like it is as you run the risk of overheating valves and plugs.

Bulldog67 · « **Reply #21 on:** March 04, 2011, 07:19:22 PM »

yeah, just carry it mate

Panic mechanic! · « **Reply #22 on:** March 04, 2011, 07:21:50 PM »

well I am free in the morning if you want me to take a look at it but can't promise I can solve it.

Bulldog67 · « **Reply #23 on:** March 04, 2011, 07:23:33 PM »

but u can hurt him if he cant

Panic mechanic! · « **Reply #24 on:** March 04, 2011, 07:28:08 PM »

and if i do fix it you can sit on bd at cheap fest.

Author Topic: What have i gone and done now....... (Read 4089 times)

Tank

Tank

Tank

Tank

Tank

Tank

Tank

Tank

Tank

Panic mechanic!

Tank

Panic mechanic!

Panic mechanic!