HY51 Fuga Hybrid

[Duncan]

Well, much more to follow about the starting issue once I work it out, but in the meantime I was reminded that these are a very large car.  

This is the (very large!) trailer that we use for moving the race car and have had a head of other things on it like the Leaf and even the tractor at one stage. The Fuga only just fit width wise

And length wise....

....if it didn't have the big curve in the front bar I would have been calling a tow truck

On the bright side, I can confirm a tractor with a tow ball on the 3 point hitch is just as good as a forklift with a ball on the tines for manoeuvring and tilting a trailer

[Duncan]

ugh, almost a year since I posted about a car that is meant to be a daily driver.....suffice to say it still is not running OK and I'll post up once I've got it sorted.

In the meantime, Eric has done a community service by showing what in inside a VQ hybrid engine....and he didn't even have to pull it apart to do so (noting, he did indeed pull apart what was left). Makes me feel much better about the state mine is in, all those oily bits are still inside mine.

 

[sonicii]

yeah, that's not a VQ hybrid engine, it isn't even a VQ35HR..  that is a VQ35DD, which is a bit of a unicorn, only fitted to a couple of vehicles, but definitely not the hybrid.

It is a direct injected engine for a start, the HR isn't.

[Duncan]

well that would explain why it had a mechanical fuel pump that mine doesn't

[alburger87]

Late to the party, specifically joined this forum as I just bought one of these and this thread has been a gold mine of info. If the OP is still around, mind if I ask what gas you been putting in yours? Mine has a Japanese sticker in the cap saying premium but it seems to get way worse mileage on premium (95) than 91. I always thought it was meant to be the other way round🤷 I do think Nissans claimed "6l/100km" is a bit fantastical 😂

[GTSBoy]

Jap premium will be 100 RON. You should use 98.

[Duncan]

Yeah 98 for me, and 6.7/100 was my actual usage.

On the downside the bloody thing still isn't running properly but at least they hybrid system is happy now. It starts but missfires like a bastard, and isn't throwing any code except "missfire". Thanks scoop.

I did notice the AFMs are reading quite different at idle 1.33v and 1.67v so 25% variance (and have both changed and swapped them, the issue stays on the driver's side afm) so I'm looking for exhaust restriction (mouse nest?), compression issue or (hopefully not, no physical damage seen) wiring issue. Throttle might also be an issue but that is harder because you can't swap them side to side and not cheap to fire the parts cannon at.

[alburger87]

On 05/12/2024 at 8:21 PM, Duncan said:

Yeah 98 for me, and 6.7/100 was my actual usage.

On the downside the bloody thing still isn't running properly but at least they hybrid system is happy now. It starts but missfires like a bastard, and isn't throwing any code except "missfire". Thanks scoop.

I did notice the AFMs are reading quite different at idle 1.33v and 1.67v so 25% variance (and have both changed and swapped them, the issue stays on the driver's side afm) so I'm looking for exhaust restriction (mouse nest?), compression issue or (hopefully not, no physical damage seen) wiring issue. Throttle might also be an issue but that is harder because you can't swap them side to side and not cheap to fire the parts cannon at.

Thanks for the replies guys, I'm new to the world of hybrids. It's definitely a lot cheaper to run than my old m35 stagea that's for sure but yeah well shy of the claimed figures so far, hoping the batteries not poked (although it came with a 3 year warranty for the hybrid battery as well). Wondering if it'll take another tank for the ecu to figure out the higher octane if it's been run on 91 for a bit? 

[sonicii]

Pretty sure they run the same engine as the Q50 hybrid which specifies 95 RON.  I ran 98 in mine for a while, but it made no difference in performance or economy, so I have been using 95 for the last few years.  I have never hit 6.0L/100km, but have returned mid to high 6 on the highway.  Being a hybrid, fuel economy is a lot more dependant on how you drive it.  At 110km/h, mine never goes into EV mode on the highway, so returns closer to 7.5L/100.

urban driving can return low 8s if you are careful or over 10 if you are a bit more enthusiastic on the throttle.