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another non start transit

Posted By tim_p Friday, July 12, 2019 3:46:01 AM
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tim_p
 Posted Friday, July 12, 2019 3:46:01 AM
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Hi all

we`ve got a 2010 ford transit 2.4d non start camchain was streached so has been replaced and is now timed up at 50 degrees before tdc ive got a good signal with an ossiliscope from cam crank sensors (see picture) weve sent the injectors and pump away for testing fuel pressure on the rail is approx 100mpa in the live data (approx 100bar) that seams high for cranking. The ecu turns off the injectors after approx 2 engine revolutions does any body know what signals the ecu should be snding to the 2 valves on the pump?

many thanks tim

oh forgot to say no fault codes are stored.

Friday, July 12, 2019 3:46:56 AM by tim_p
SB126
 Posted Friday, July 12, 2019 7:20:43 AM
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not enoghe fuel pressure,,, 200 bar cranking
tim_p
 Posted Friday, July 12, 2019 7:58:20 AM
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Hi there was a typo in my post it’s got 100 mpa
Which according to google is 1000 bar
McTech
 Posted Friday, July 12, 2019 9:13:18 AM
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Tim,

Age - mileage - engine code????


too much pressure...


100Mpa = 1000bar - Pressure building because injectors switching off?

What is the the duty cycle on the IMV PIDs showing whilst cranking?

Did you pin the engine during chain replacement?

PWM signals to pump Valves - 12V switch to earth (duty cycle)

MT





I O, I O, its off to work I go!
tim_p
 Posted Friday, July 12, 2019 10:22:33 AM
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hi

its a 2010 transit with approx 170000 miles (although had a brand new genuine engine about 3 -4 years ago) the engine code is JXFA

the van came in as a non start weve replaced the chain as the tensioner was nearly all the way out it was pinned prior to replacment then checked with at 50 degrees before tdc.

I havent scoped either of the valves on the pump as im unsure what sort of signal it should recive from the ecu i have checked for a (lackof) circuit on the 4 wires going back to the ecu and they are fine.


many thanks tim


K And R
 Posted Saturday, July 13, 2019 4:39:05 AM
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Tim

"(although had a brand new genuine engine about 3 -4 years ago)" Brand new or re-con ?


What was the mileage when the "new" engine was fitted ?


Service history ? what was live data like before fitting the chain, obviously the chain was ok


and it was something else coursing the non start.


Kev.

"If you dont KNOW how it works, don,t try to test or fix it"
Iver
 Posted 2 days ago @ 9:28:42 AM
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I am not so sure I like the look of the CKP Signal. I see some implausible engine Speed changes going on there. For sure there is not enough time across that screen, Be nice to see 5-6 Engine revolutions. Easier to see Sync too. And if you upload the file then anyone can open it with Shopstream.


As with the fuel pressure, Snap Do get the units wrong sometimes, far easier to just scope the FRP signal Voltage.


Also Scope the " Valves" on the pump. Not familiar with 2 "Valves" on a transit pump. Are you sure they are both valves. Unplug one at at time to set a code and make sure you know what each component is.

Is that scope 2 or 4 Channel ?

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