Search 'hot start' and you will see bunch of postings describing your symptoms.
Common solution is to replace an accumulator. It's a PIA job so you may want your mechanic to do this.
fuel pressure gauge can also diagnose source of your problem.
Search 'hot start' and you will see bunch of postings describing your symptoms.
Common solution is to replace an accumulator. It's a PIA job so you may want your mechanic to do this.
fuel pressure gauge can also diagnose source of your problem.
Location: Vancouver, BC
Posts: 3,385
My VIN: thirty two 'o five
Club(s): (PNDC)
There are a number of places where failure would cause hot start issues:
1. Accumulator
2. Fuel pump check valve
3. primary pressure regulator o-rings
4 leaky injectors
5 I forget the fifth
I have had hot start issues with 1, 2 and 3. You need to measure rest pressure. Once you confirm you are loosing rest pressure you can begin to test each component. A bad check valve for example drops rest pressure very quickly. The PPR and accumulator tend to trickle down more slowly IIRC.
Edit - 5 is a leaky cold start valve IIRC
Dave
Here, somewhere.
Dave M vin 03572
http://dm-eng.weebly.com/
Problem Fixed.
one clogged injector.. I did the mason jar test.. Number 3 barely vaporizing. All the others were great. This was a new injector
so cleaned it with brake cleaner.., it worked... tested,, pattern came back and is all good.
Also... one bad O2 sensor... got one from Amazon for 8 bucks. man was my dwell off! WOW!
ok.. fixed that , Nice idle at 775-800 Rpm.. no hunting.. and dwell meter oscillates between 38-44, mostly hitting 40 on average. and rich smell is gone.
car starts on the spot after two hours ...great!
OPINIONS please?
Posts: 4,808
My VIN: 3937
Your initial problem description and stated facts don't match your description of the solution and things you corrected.
Glad you fixed it, it just makes it difficult for someone to offer help or suggestions when the details aren't consistent.
Sept. 81, auto, black interior
Location: Vancouver, BC
Posts: 3,385
My VIN: thirty two 'o five
Club(s): (PNDC)
Dave
Here, somewhere.
Posts: 110
My VIN: Vin 11753 ex Vin 11766, 11622
Club(s): (ADOA) (DCH)
Few guys over here have seen warm start issues lately, with hot and cold starts fine.
The culprits have always been injectors leaking at rest and not holding pressure.
Quick test pop the injectors out after 30 mins after a run, if one or more comes wet , there is the problem.
Al Vanstone
Vin 11753 - Kuwait
Ex Vin 11766 - Dubai
Ex Vin 11622 - Culloden Auction
www.deloreanclub.co.uk
As seen on The One Show, Channel 5, Discovery, Britains Greatest Machines and of course Wheeler Dealers!
Want to know about balljoint failure.. look here http://www.deloreaneurotec.co.uk/for...hp?f=13&t=2198
Kudos to the Upgrade RPM relay.
My engine starts on the first crank. No matter how long its sits between trips..
Simply amazing.
Thanks.