no starty

been all over the search on here, cant find a defiante answer, just lookign for tips really….

og t a 86' GTi cab, its the stock engine 1.8 8v, k jet engine, the problem started last friday, i drove it the 22 miles to work fine, then when i went to start it for the trip home nothing… it turns over like a good un… i then got a mate to tow start me, and it did fire eventually, but it was rough running, no idling and only turning over above 3/4k but with no power at all at any revs when in gear.]

at first i thought it was igntion realated, a dead coil, or on its way out, needing all 14v of power to give a go enough spark, as the old coil was the only questionable part ont he igntion system, now ive replaced that with a known good coil… and nothing….

so the the ignition system is perfect, everthings new/in good nick, ive pulled all the plugs and its got a good spark, the king lead sparkign fine, so the coild in good nick etc..


next has to be fueling…. i cant actually smell fuel in the engine bay, which after 25mins of cold cranking you should really!!

the fuel pump is making its usual wurring noises from under the rear seat, and the relay in the fuse board is clicking as usual…. the fuel is getting to the fuel filter, and under pressure as ive undo the outlets banjo bolt and it spayed fuel out under pressure…  next i pulled a injector and cranked the engine, no fuel came out, which i thought was wrong… so the problem has to be the metering head??

anyone ever had any issues like this… ive seen afew threads saying adjust the metering head, which ill have ago at if anyone had a good thread?  ill also try and pull it up and pull a injector, to see if it chucks out any fuel??

ill be chucking some easi start down the inlet tomorow to see if it go at all, then proberbly spray some fuel down the plugs and try that… it has to be fueling?!?


any info would be great!

cheers
alex.

i had a bit of a werid fuel problem on the rot box

metering head plunger thingy was sticking and not moveing as it should

take the metering head of and give things a clean, wont do any harm

will do, ill take the carb cleaner in the morning too then!


any more tips?


cheers
alex.

its electronic igntion, so no points to check… wish it was that simple ive checked over the ignition system and its 100%… the local mechanic, near where it broke down, put the HT lead/plug testers on it eariler and they were fine!

so it has to be fueling, now i was under the impression with the injectors removed and resting on the rocker cover, when turning over the engine, with the throttle open, it should spray fuel out of each injectors but nothing… nada!!

now ive undone the banjo bolts that connect the stainless braid hoses to the injectors to the fuel distributor, and when pulling up on the air flow senesor plate fuel does leak out of the fuel distirbutor,

it also is getting presure to/from the fuel filter, but possibly not enough….

that would also be the answer to why the injectors arnt firing any fuel out!

other than chanign the pump whats next?

cheers
alex.

have to took the metering head of and cheaked to plunger in there

when pulling up on the air flow senesor plate fuel does leak out of the fuel distirbutor

are you sure fuel come out of the distirbutor???? the same distirbutor where the ht leads are  8O

yeah, fuel comes out of the FUEL distributor on the metering head, when i pull the plunger up, fuel leaks out of where the banjo bolts attach the fuel injector lines yeah. so when they are lose, fuel leaks out when the plunger is pulled upwards.


anyone in the north west got a fuel pressure guage so i can defiantly check it is the pump? or know of any good specialists?

im pritty sure its not the accumulator, as its never had any hot start problems…

any help would be great!

cheers
alex.

undid one of the fuel injectors and i tryed the starter, fuel is getting to the injectors, but possibly not enough pressure to open the injectors….

my fuel pump is working, ive bought a 2nd hand one off here to try, hopefully this will sort it.

the reason i think its the pump rather than the injectors is 4 injecotrs wont fail at the same time…. i hope!

cheers
alex.

if not the pump then the fuel pressure regulator which is where the pipes attach to the metering unit, you  can unwind it and clean out any cack :-)

it wont spray fuel when cranking unless you also lift up the metering flap. i did have similar symptoms to what you had with a blocked fuel filter. i got fuel as far as the injectors but pressure was too low to open them. replaced the filter and all was well

well i tried the above before, ive stuck a scew driver up thu the meterign flap, and it sprayed fuel everywhere… success!!

but its still not going…. now it kinda has to be ignition…. i guess…

the dissy's not moved, the coil, cap, leads, rota arm and plugs are all new, well less than 4 months old.

its possible its flooded now…. so ive left the plugs out over night, ill be going back in the morning to have on last go at firing it… if it doesnt got it getting set on fire.


cheers
alex.

checked for air leaks? would be fairly major like hose come off or split.

i dunno, its turning over real fast just not firing at all, its weird that it tow started last friday, but was only reving above 3k, and had no power nowhere in the rev range.

ill be taking my compression tester down there too,

its got everything, fuel, air and spark. think its just given up all hope.

cheers for your help!

might be worth getyting the fuel pressure checked if possible, so you can see whats going on inside the metering head

cam belt ????

reeto, well this is kinda embarising… (spelling?)

tunrs out that it was a bad coil, and heavily flooded!!

called the AA out and the dude said even tho its a new 'known' to be good coil… its still giving a weak spark, it was getting a good 12v to the coil… so it had to be that… he pulled the plugs dryed em out and after about 5 times it fired up, was idiling pritty rough, but ive bought a new coil for it now and its 100%!!!

funny thing is ive posted the same questions over on a aircooled forum VZi, and the title to that thread was…..

'think i know it…. bad coil'

lol

well 3 coils later, only one brand new one… its fine again. no probs with the metering head at all… wooops.

cheers for all your help