Need Mechanic in Vegas
03-16-2010, 10:11 AM
#1
Instructor
Thread Starter
Join Date: Aug 2007
Location: Las Vegas
Posts: 224
Likes: 0
Received 0 Likes
on
0 Posts
Need Mechanic in Vegas
I just found one on ebay that the guy had listed under 'Salvage"... the title is CLEAN, he just couldn't keep it running - I bought it for $1800. '79 5 speed...
Here's the ebay item # 230444483093
It's gonna be here in a few days(Friday)... Anyone in Vegas wanna take a look and perhaps help me figure out what's wrong?
Apparently idles fine, but when step on accelerator it cuts out - remove foot and idles fine again...
Any ideas?
Russ & Russ
Here's the ebay item # 230444483093
It's gonna be here in a few days(Friday)... Anyone in Vegas wanna take a look and perhaps help me figure out what's wrong?
Apparently idles fine, but when step on accelerator it cuts out - remove foot and idles fine again...
Any ideas?
Russ & Russ
03-16-2010, 01:20 PM
#4
Race Car
http://www.carlsplace.org/
THey have come highly recommended. I was going to use them for a PPI but the deal fell through.
THey have come highly recommended. I was going to use them for a PPI but the deal fell through.
03-16-2010, 02:05 PM
#5
Chronic Tool Dropper
Lifetime Rennlist
Member
Lifetime Rennlist
Member
You'll want to add a CIS fuel pressure testing rig and a CO meter to your toolkit. With those a good CIS manual you'll be over this in a hurry.
In the deep dark RL past there were several threads around cleaning and 'rebuilding' the CIS metering units. Plenty of fuzzy DIY instructions on the 'net too. These metering units (often referred to as 'fuel distributors' because of their appearance) are EXTREMELY sensitive to contamination, and they really don't like to sit. There are little brass screens to keep crud out, and those screens tend to rot over time and are often removed. The actual metering is managed by a series of pistons with o-rings on them, actuated by a plate and arm that sit in the airflow path, and the o-rings deteriorate and flake if left dry. The flakes are a problem, the non-round o-ring shape means the pistons don't move correctly, and the poor seal on the pistons messes up system pressures too. Bottom line for a car that's been sitting a while is that you'll likely want to go through that unit or just buy one that's been reconditioned. 928 Int'l has them ready to go.
No matter what, you need to get the old gas out of the tank if the car's been dormant for a while. Maybe clean the tank to get the rocks/sand/slime/crud out of there, then fresh fuel before you do anything else.
Good luck with your project!
FWIW, I've seen very few warm-up regulators that are actually bad coming out of the car. Many are bad after they've been 'worked on' by 'experts', so many are replaced needlessly. OK to clean one gently but resist the urge to take it apart to the point where the heater or the thermo strip will be damaged/bent/maladjusted during your efforts.
In the deep dark RL past there were several threads around cleaning and 'rebuilding' the CIS metering units. Plenty of fuzzy DIY instructions on the 'net too. These metering units (often referred to as 'fuel distributors' because of their appearance) are EXTREMELY sensitive to contamination, and they really don't like to sit. There are little brass screens to keep crud out, and those screens tend to rot over time and are often removed. The actual metering is managed by a series of pistons with o-rings on them, actuated by a plate and arm that sit in the airflow path, and the o-rings deteriorate and flake if left dry. The flakes are a problem, the non-round o-ring shape means the pistons don't move correctly, and the poor seal on the pistons messes up system pressures too. Bottom line for a car that's been sitting a while is that you'll likely want to go through that unit or just buy one that's been reconditioned. 928 Int'l has them ready to go.
No matter what, you need to get the old gas out of the tank if the car's been dormant for a while. Maybe clean the tank to get the rocks/sand/slime/crud out of there, then fresh fuel before you do anything else.
Good luck with your project!
FWIW, I've seen very few warm-up regulators that are actually bad coming out of the car. Many are bad after they've been 'worked on' by 'experts', so many are replaced needlessly. OK to clean one gently but resist the urge to take it apart to the point where the heater or the thermo strip will be damaged/bent/maladjusted during your efforts.
03-16-2010, 07:31 PM
#6
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Hey, Russ - where ya been?
You sure you want to invest in an OB with CIS fuel management system?
My first 928 was a '79. It takes quite a bit of dedication to keep them operating correctly after this many years.
Like Dr. Bob, my guess as to the symptoms would be a clogged/worn fuel distributor.
If it is just dirty then it may be able to be cleaned. If it's worn, it will need replacement - good luck finding one.
You sure you want to invest in an OB with CIS fuel management system?
My first 928 was a '79. It takes quite a bit of dedication to keep them operating correctly after this many years.
Like Dr. Bob, my guess as to the symptoms would be a clogged/worn fuel distributor.
If it is just dirty then it may be able to be cleaned. If it's worn, it will need replacement - good luck finding one.
Trending Topics
03-20-2010, 02:41 PM
#8
Drifting
There's a place called BlackSheep automotive that bailed me out with some cooling system work when I passed through there last summer. Turns out he's a specialist in 928 V8 conversions, but he definitely knows his stuff. Off Tropicana if I remember correctly.
