Soarer v8 problem

[fruity_south]

Hi guys,

i bought my first v8 soarer last night to do the conversion on my mkiv supra.

it had to be towed home as it had no mot or tax on it.

when i got near my home i thought i would give it a try and start it up. it has a fully charged battery on it and jerry can of fuel.

now tick over it sounds lovely, even whiles reving it it sounded great. it wasnt until i put it in gear, drove about 10-20 foot and everything cut out, then all turned back on apart from the engine (lights ect)! breaks became rather stiff and i lost power steering.

now iv spent this evening running the car and wondered if it was purely because it had been left standing for a while. again sounded lovely. pulled it off the drive onto my private road and it cut out again. started her up, reversed her and it did it again. kept doing it in drive and reverse. but only whiles i had my foot on the gas pedal in gear. doesnt do it any other time.

 

any ideas people? please i could really do with some know how!

[edge]

Fuel pump possibly

[fruity_south]

that was one of my thoughts but wouldnt it do it on reving anyway not just when its in gear

[Guest ugp]

does it rev cleanly out of gear? Does it cut out when you let off the pedal or with your foot still on it? Unplug the maf sensor and try it also.

[fruity_south]

car revs very cleanly, it cuts out whiles on the pedal. will try the maf tomorrow

[edge]

car revs very cleanly, it cuts out whiles on the pedal. will try the maf tomorrow

 

Cuts out on load or cuts out when you rev it out of gear?

As you wont use much fuel off load

Edited October 25, 2010 by edge (see edit history)

[fruity_south]

its only when it is in drive or reverse when moving, more so in drive after about 10-15 feet. whiles in park or nutral its fine.

[Swampy442]

Was it hot or cold? MAF sensor, air leak somewhere, both dizzy caps/arms. Try the fuel pump bypass but it wouldnt even start if that was dodgy.

[fruity_south]

both hot and cold it does it on. the soarer had been left standing for about 6 months so i left it running a good half hour this evening and then tested it and it still happened. i havent heard any air leaks but then i havnt had my head in the bonnet whiles accelorating in gear. i was thinking dizzy caps/arms but surely it wouldnt be ticking over so well.

[Swampy442]

It would be fine when not under load but the spark energy wouldnt be enough under load. Theyre expensive and a set of leads plugs and caps/arms will run you well over 100 quid so people forget about them. Try the MAF first though, just unplug it and try

[edge]

try searching on the owners clubs mate. The lexus one is pretty good.

[fruity_south]

will do, £100 not to bad seeing as the soarer only cost me £550

[Swampy442]

But its a Toyota

[fruity_south]

im on the soarer owners club and lextreme but not much has come back on there, no where near as much as on here

[Guest ugp]

I've got two motors in my garage, ready to drop into the Supra. Could maybe lend you some bits to try swapping over?

 

Firstly, make sure it revs with a healthy boot, if it splutters then fuel pump, blocked lines, injectors etc. If its not cutting out revving the tits off it at stand still, it certainly isnt weak spark etc when trying to pull off (in comparison its not loaded up as much trying to gently pull away ).

[fruity_south]

i certainly havent been booting it when attempting to drive it. it has only been under small load. i reved it up to 6000 rpm earlier and their were no splutters or anything like that, it ran as smooth as anything it was literally only when it was in gear.

[Nodalmighty]

Have a look at the loom around the engine. Look to see if anything could be stabbing it or if any parts look stretched when the engine twists under torque of drive or reverse. Could be as simple as loose battery terminals, a loose earth strap or a dodgy connection in the loom. While it's ticking over wiggle the loom at various sensors and points (Karmann Vortex MAF's are known to be of poor reputation) and see if it cuts out at any point.

[fruity_south]

my mate whos a mechanic had a quick look over it and discovered a misfire, so much for running smoothly. though im not convinced this is the only reason it cuts out. i took the spark covers off which exposed what looked like a very new cambelt. could it be by some chance that it is because the timing is not set up right to cause it to cut out?

[Swampy442]

Plugs, leads, dizzys. That cures 99 out of 100 missfires on these. The rear plugs are a bit tough so people tend to 'forget' them

[fruity_south]

yea i will be testing all of these tomorrow and replacing if need be.

though im still not sure if it will correct the problem of it cutting out.

[markII]

your problem lies in the fuel relay system i reckon, in Toyota's the fuel relay system ticks over and runs at two different voltages. had this problem in my jzx90

[Swampy442]

As I said if it was the pump ecu it wouldnt start. Did you remove the flowmeter plug while it was running?

[fruity_south]

the mfi? no i was a bit of an idiot and forgot i will try once iv tested the sparks.

[fruity_south]

where is the fuel relay system?

[Swampy442]

Id do it first, its the easiest thing The relay is in the fuse box but I assume he means the ECU. Sometimes they fail and the car wont start, bridging a terminal in the diag port runs the fuel pump at 12v, its a short term fix.