craggsy 91 Posted October 9, 2009 Report Share Posted October 9, 2009 Right been talking to Tony quite a lot about this but i'll put it all down in this thread so others can see and maybe give some input.Car had fuelling issues at the rolling road day we had. So after that I ordered a walbro 255lph fuel pump, plus already had some 360cc red top injectors and BEGI rr fpr.So i came back and put walbro in and swapped old rr fpr to the BEGI and put bigger injectors in with a 3.8bar fpr in fuel rail.BEGI is plumbed in correctly on the fuel return pipe with pipe from fuel rail going into BEGI's "in" port and pipe to tank in other port, I have a fuel pressure gauge in the line from fuel rail to BEGI.It was all running correctly, all be it slightly overfueling as it needs setting up, until last monday when i left work it struggled to start, but did, and struggled to pull car along until it got warm then it ran fine. Same thing happened Tuesday as well but wednesday I went to leave for work and it wouldnt start at all. Luckily i had use of parents/sisters car so all good. I left car stood wednesday and thursday.Went to try it thursday and still wouldnt start, plus killed battery so bought a new Bosch one. Many calls to Tony then followed whilst I tried to sort this.I checked that there was a spark coming from the plugs and there was from #1 so had spark. Checked I was getting fuel to the fuel rail by undoing the nipple on fuel rail and yes fuel to rail.Next, after Tony suggested checking spark to ALL plugs I found out that I had no spark to #6 so I bought a new coilpack.Also put in was a new blue temp sensor and a new wiring loom for throttle body, coil pack and injectors.This is now where i'm at, but stuck as cannot work on car till my next day of which will either be Tuesday and thursday or thursday/ friday.Even took the car back to standard, as in no schrick or BEGI in case there was a problem anywhere like that, and again wouldn't fire.Jobs to try next are to make sure I have spark from all 6 plugs with new coilpack as that might point to a problem else where. Throw some more plugs in to see if they are shot. Do a compression check incase something has gone wrong inside.Also gonna try changing or cleaning crank shaft sensor and cam sensor.Only thing i havent looked at is the injectors as I had them cleaned by ASNU injector cleaner company, could always put original injectors back in to try but I cannot see how they would stop working properly.And all The time whilst doing this I have had VAGCOM plugged in and had no fault codes come upAny ideas are most welcome Link to post Share on other sites
UnitedMotorsport 55 Posted October 9, 2009 Report Share Posted October 9, 2009 Have you taken any of the spark plugs out to look at the condition of them? I suspect they are shot! Link to post Share on other sites
craggsy 91 Posted October 9, 2009 Author Report Share Posted October 9, 2009 They are black and been soaked in petrol a few times due to trying to start it numerous times.They are on the list to buy tomoroow hopefully Link to post Share on other sites
UnitedMotorsport 55 Posted October 9, 2009 Report Share Posted October 9, 2009 That is where I would start. It is over fueling badly due to using ~200% sized injectors. Link to post Share on other sites
craggsy 91 Posted October 9, 2009 Author Report Share Posted October 9, 2009 So would mapping be a better idea with the bigger injectors, It is supercharger Link to post Share on other sites
craggsy 91 Posted October 9, 2009 Author Report Share Posted October 9, 2009 But it ran fine with them in for about 2 weeks Link to post Share on other sites
UnitedMotorsport 55 Posted October 9, 2009 Report Share Posted October 9, 2009 The plugs would have been clogging up over those 2 weeks. The best way is to remap the ECU for the bigger inejctors - What boost are you running? Link to post Share on other sites
craggsy 91 Posted October 9, 2009 Author Report Share Posted October 9, 2009 Running 6psi at moment, I have a 10psi pulley waiting to go on when i get things sorted.Do you have anything for a supercharged engine ECU wise?So safer option for time being would be standard injectors? Link to post Share on other sites
UnitedMotorsport 55 Posted October 9, 2009 Report Share Posted October 9, 2009 Safest for now is stock injectors and tune the BEGI to get the correct fueling at idle and in boost. Link to post Share on other sites
craggsy 91 Posted October 9, 2009 Author Report Share Posted October 9, 2009 OK i'll get em swapped over as soon as I can, plus new plugs Link to post Share on other sites
rodney 17 Posted October 9, 2009 Report Share Posted October 9, 2009 yup got to agree the plugs will not work when wet... the reason all was kinda working was the latent heat was helping keep everything runnning. with the current wet weather and temperature drop you are struggling to still find that and thus the wet plugs. plus the period of degredation over the last 2-3 weeks...Yes you should get the map asap and do it on new high temp plugs (mk2) again. Also worth having a new Lambda as there is a chance under certain circumstances that has gone.Basically the Air sensor and exhaust sensor are working against each other so you are constantly over adjusting the trigger pulses on your injector due to the oversizing...Usually it is better to run on the standard injectors (which still usually overfuel) and fit the larger as you remap. That way you know you have correct pressure/surge on fuel pump and regulator and correct readings on air in and out... and gassesJust to check you did increase your fuel reg size didnt you??? Link to post Share on other sites
craggsy 91 Posted October 9, 2009 Author Report Share Posted October 9, 2009 Yep it has a 3.8bar fpr now, I have a new lambda as well to go in. Have been using NGK BKR6E as Jim Potter recommended BKR7E and I couldnt find any quickly so went with 6s. Link to post Share on other sites
UnitedMotorsport 55 Posted October 9, 2009 Report Share Posted October 9, 2009 Plug choice is ~ok. The chances are that the lambda probe currently fitted to your car is as black/sooted up as your spark plugs. Another thing to look at is fuel content in your oil. Pull out the dipstick, rub the oil on your fingers and smell it. Link to post Share on other sites
craggsy 91 Posted October 9, 2009 Author Report Share Posted October 9, 2009 LAmbda will be coked up as there was plenty black smoke whilst it ran.I always smell oil filler cap when I take it off, but will do dipstick as well.Some great advice and I will be acting upon this Link to post Share on other sites
UnitedMotorsport 55 Posted October 9, 2009 Report Share Posted October 9, 2009 No problem. I dont think anyone on here wants to see you wreck your engine because of this.Black smoke whilst running - I pretty much garuntee there is fuel in your oil. This is not good, and will eventually make the crank bearings fail. Link to post Share on other sites
craggsy 91 Posted October 9, 2009 Author Report Share Posted October 9, 2009 When i say black smoke, when I put my foot down not on tick over Link to post Share on other sites
jims13 6 Posted October 9, 2009 Report Share Posted October 9, 2009 plugs are shot craig.. i thought you werre gonna run begi and standard injectors ?? as per what i did before i got one of c2's ecu's ! the only other way to do it is to have the ecu remaped or , get a bigger flowing afm , to even it out a bit with the bigger injectors, but it wont be perfect and will still overfuel alot.i would think that standard injectors, new plugs, and the begi, along with the 255 walbro will be ok for 300 ish bhp, its just not as efficent as bigger injectors and a proper map. Link to post Share on other sites
craggsy 91 Posted October 9, 2009 Author Report Share Posted October 9, 2009 Yep gotta get em all changed over till I can afford a remap Link to post Share on other sites
rodney 17 Posted October 10, 2009 Report Share Posted October 10, 2009 Dear Mr. Bank manager...... Link to post Share on other sites
craggsy 91 Posted October 10, 2009 Author Report Share Posted October 10, 2009 lol....about right tho Link to post Share on other sites
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