nmahi 0 Posted May 21, 2015 (edited) Right guys, would really appreciate some advice. I got a 67k Corrado, which has been off road for 12 odd years, sat in a shed. I brought it as a nonrunner. Once cleaned up, I noticed someone previous to me had messed with the electrics (after market alarm and Imm) I put a good battery on it and the Igintion lights came on and all electrics worked fine. Turned the key and nothing, so by passed the alarm system and the engine turned over but no fuel pump buzzing. Took the intank pump out and put power to it, this was dead, so replaced. Underside pump was also dead and replaced this aswell. Inc new fuel and feul filter. After a few turns (build up pressure) it started and run beautifully, a little smokey to start with. Changed the oil n filter...cambelt was not great and cracking, replaced this and the tensioner, drive belt and power steering belt. Refreshed the power steering fuild also. Right, the problem... Start the car and let it run, cars up to temp, fans kick in about 3 times and the car cuts out. Turn the key, car starts and runs for about 5 mins and cuts out again...(continuous problem) The underside pump has got noisey again, like fuel starvation. Checked the lift Pump but this is working fine....(???) Spark is fine. Things I have replaced and changed: ECU, Dizzy, Cap and rotors arm, Leads & plugs, Both pumps (lift pump twice) Fuel filter Fuel Flushed lines out, All injectors sparking fine, Ecu pump relay Igintion swtich I'm really confused with this one, trying to get hold of a metering head to try this.... Before someone asks, Ive had this problem for a few months and tried to read everything I can about this problem on the forums, but just can't get to the bottom of it. It's such s lovely car, with full vag history and low miler. Got to be someone who can help me, I'm in Birmingham and willing to pay if you can fix it.... I want to enjoy it while the weathers good. Anyone near Birmingham with a metering head, please get in touch. Thanks for reading, looking forward to your help. Could I have a faulty underside pump? It's borsch and brand new? Cheers bob Edited May 21, 2015 by nmahi Quote Share this post Link to post Share on other sites
davidwort 0 Posted May 21, 2015 you really need to find a garage that has the right unions to connect up a fuel pressure gauge to the system (including control pressure), did you replace the accumulator under the car or just the pump, does the system retain pressure when the ignition is off? - crack the banjo fitting to the metering head after it's been standing a day and you should get a good spray of fuel (into a rag!) did you check for water or debris in the tank when you changed the pumps? as it's a 2L the lambda may well be suspect, these can cause big running and idling problems. it could be the ignition side too, what sort of condition is the distributor and hall sender in? the hall sender could be breaking down when the engine gets hot Quote Share this post Link to post Share on other sites
nmahi 0 Posted May 21, 2015 When Tank was cleaned out, no water present and little debri removed. Accumulator was not changed. But I did have all the fuel unit off and blow all the lines through. Pressure in system is good, I did crack the banjo off and it sprayed well. I swapped the dizzy with a different one off my mates car that was running fine. No difference made. Not tried the lambs sensor (something new to try) Quote Share this post Link to post Share on other sites
nmahi 0 Posted June 5, 2015 Right people, problem sorted. It turned out to be the one way valve on the fuel pump unit. It was seized closed, so the lift pump was working over time, heating up and shutting down. Hence the car cutting out. Pump swap, fuel unit cleaned & 1 way valve cleaned / working and it's good to go. I wanted to let you know the outcome and cause of my problems. Hate when people don't update/solution to problems. Quote Share this post Link to post Share on other sites
MZpog 10 Posted June 5, 2015 Right people, problem sorted. It turned out to be the one way valve on the fuel pump unit. It was seized closed, so the lift pump was working over time, heating up and shutting down. Hence the car cutting out. Pump swap, fuel unit cleaned & 1 way valve cleaned / working and it's good to go. I wanted to let you know the outcome and cause of my problems. Hate when people don't update/solution to problems. Glad to hear you got it sorted.....puts problem in mind vault in case happens to mine. Quote Share this post Link to post Share on other sites
g0ldf1ng3r 13 Posted June 5, 2015 excellent to hear you fixed it & how :) Quote Share this post Link to post Share on other sites
Jim 1 Posted June 5, 2015 A cutting out issue on a valver, that wasn't the ISV! That's a rarity :) Appreciate you coming back to update us on what the issue was - hopefully will help someone else some day. Cheers. Quote Share this post Link to post Share on other sites
nmahi 0 Posted June 5, 2015 Symptoms: cutting out at 15mins, starts up, then dies after 5 mins (this continues every 5 mins)also the sound of bubbling from tank,and noisey main pump. Please remember this car has been sat in a barn for year. (Spiders still making appearances) Quote Share this post Link to post Share on other sites
TuckerZak123 10 Posted August 30, 2015 (edited) This is awesome, appreciate you telling the solution as my 16v starts up, then cuts out after about 10 mins. Always thought it was the cooling system as the top radiator hose was red hot and the bottom was cold. Replaced thermostat, sensors, and water pump! I was kinda thinking it could be a fuel issue but it was just strange how it was running for so long. Seriously I almost set my Corrado on fire after the problems it's had... Edited August 30, 2015 by TuckerZak123 Accidentally tapped post... Quote Share this post Link to post Share on other sites
