The Camaro Club (UK)

Online Community for all Camaro Owners and enthusiasts
It is currently Fri Nov 01, 2024 8:29 am

All times are UTC




Post new topic Reply to topic  [50 posts ]  Go to pagePrevious12345Next
Author Message
 Post subject: Re: Strange Problem
PostPosted:Tue May 19, 2015 6:11 pm 
Offline
Big Block

Joined:Sun Jun 02, 2013 7:20 pm
Posts:160
Car Details:80 T/A with a BBC
79 Z28
68 Firebird F 400
67 Firebird Convertible
Location:Penzance, Cornwall
I asked about a Vacuum gauge and the readings, because we can tell what's going on inside your motor from those readings.

A colour tune kit will also tell us what the mixtures are at those RPM's

Your mechanical fuel pump flow rate should be good enough to overcome any small air leaks in the system. and it would not get better at higher RPM's it would get worse. :(


Top
   

Re: Strange Problem

Sponsor

Sponsor
 

 Post subject: Re: Strange Problem
PostPosted:Wed May 20, 2015 5:53 pm 
Offline
Big Block

Joined:Sun Jul 25, 2010 3:40 pm
Posts:206
Location:Roswell New Mexico
Odd question.

Do you have ethanol added to your petrol?
They started that BS here only to find that the ethanol caused all sorts of problems when it began swelling and dissolving the rubber fuel lines from the inside.
I have a Craftsman lawn tractor that had similar symptoms to your car and after much cursing and head scratching found that the fuel line had swollen inside.
Check out this to see what I mean

http://www.gmcmhphotos.com/photos/ethan ... rings.html


Top
   
 Post subject: Re: Strange Problem
PostPosted:Wed May 20, 2015 6:24 pm 
Offline
Big Block

Joined:Tue Jun 17, 2014 7:23 pm
Posts:86
Car Details:1967 Camaro 327
Location:Hannover Germany
Thanks for the suggestion.
I only use v power racing or an equiverlant here in Germany, the high ethanol content is called E10 here and I have never used it.

But you have drawn my mind to the only fuel hose I have not changed which is the one that goes to the carb. I will check this out tomorrow and replace it :thumbup:

Hopefully my fuel line will be here tomorrow and I will change that the weekend :thumbup:

_________________
Remember the days when sex was safe and car racing was dangerous.......


Top
   
 Post subject: Re: Strange Problem
PostPosted:Fri Jun 05, 2015 8:56 am 
Offline
Big Block

Joined:Tue Jun 17, 2014 7:23 pm
Posts:86
Car Details:1967 Camaro 327
Location:Hannover Germany
Sorry Guys I have been away with work.

Fuel line fitted and still the same problem. Although the fuel line did need replacing.

I started the car this morning and the fuel filter was full, I decided to run the car on tick over for an hour to see what happened.
After an hour the fuel filter was empty, this can only lead me to possible causes.
1, I have ran out of fuel, this cannot be the case as it is 3/4 full
2, I am sucking in air.

I don't see any other explanation, even if the fuel pump was weak (it's a new one) there is no way the fuel filter could get empty unless their is coming from the carb side.

Could my fuel pump rod be worn or even worse my camshaft :thumbdown: but why would it be ok at hard throttle :wtf:

I am changing the fuel sender and pickup this weekend, that is the last thing to change in the fuel line system.

_________________
Remember the days when sex was safe and car racing was dangerous.......


Top
   
 Post subject: Re: Strange Problem
PostPosted:Fri Jun 05, 2015 2:50 pm 
Offline
Big Block
User avatar

Joined:Tue Feb 23, 2010 12:40 pm
Posts:3245
Car Details:'79 Camaro, 350 V8
Location:South Bucks
I wish i could help, this sounds like a real bugger of a problem.

Hopefully it's the pickup sock in the tank that's clogged and as you'll be changing that out soon, it should take care of it. Otherwise you are probably right about the fuel pump rod. I wonder if, to rule that out, you could plumb in a temporary electric fuel pump and run it for a while like you did before to see if the fuel level drops?

_________________
How to post pics: When writing a message, scroll down and use the "attach file" option. Where possible, a photo sharing service can be used such as Flickr, Imgur etc. The image location (usually ending in .jpg) can be copy and pasted between the ][ brackets that appear when you click the 'Img' button (you can find this button at the top of the message box).

How to post youtube vids: Click on the 'youtubeHD' button at the top of the message box and in the middle of the ][ brackets that just appeared, copy and paste everything from the youtube web address that appears after the = sign i.e if this is the url: https://www.youtube.com/watch?v=K2cNqaPSHv0 just copy "K2cNqaPSHv0").


Top
   
 Post subject: Re: Strange Problem
PostPosted:Fri Jun 05, 2015 6:50 pm 
Offline
Big Block
User avatar

Joined:Sun Jan 13, 2013 7:00 am
Posts:1158
Car Details:1986 Camaro, bought into Spain by me in 1993.
305 replaced by a 355, 750 Demon carb, RPM AirGap intake, Brodix heads, Hedman Hedders, 3" Flowmaster exhaust.
Wheels are Summit aluminium 5 spokes, tyres are 245 rear 225 front BF Goodrich.
B/M transmission, battery relocated to the rear, GoodMark 4" cowl steel hood.
Location:Spain East Coast
A clogged sock on the pickup could, I´m thinking, lead to a bad idle because the pump is not working so hard as at
full throttle.
At full throttle the pump would be overcoming the clogged sock until such time it got sooo bad.

I thought those sock filters just crumbled away with age....


Top
   
 Post subject: Re: Strange Problem
PostPosted:Sat Jun 06, 2015 7:56 am 
Offline
Big Block

Joined:Sun Jun 02, 2013 7:20 pm
Posts:160
Car Details:80 T/A with a BBC
79 Z28
68 Firebird F 400
67 Firebird Convertible
Location:Penzance, Cornwall
So did the engine stop running?

Fuel filters always look empty!


Top
   
 Post subject: Re: Strange Problem
PostPosted:Mon Jun 08, 2015 7:58 am 
Offline
Big Block

Joined:Tue Jun 17, 2014 7:23 pm
Posts:86
Car Details:1967 Camaro 327
Location:Hannover Germany
The car kept running, there was always a tiny, little fuel in the filter.
I have a feeling it was running more on Vapours than anything else :o

I did not manage to drop the tank this weekend, but all going well this week on one evening I should get it done.

I have lost so much driving time with the car and it is driving me nuts :evil: :evil: :evil:

_________________
Remember the days when sex was safe and car racing was dangerous.......


Top
   
 Post subject: Re: Strange Problem
PostPosted:Mon Jun 08, 2015 9:21 am 
Offline
Big Block

Joined:Sun Jun 02, 2013 7:20 pm
Posts:160
Car Details:80 T/A with a BBC
79 Z28
68 Firebird F 400
67 Firebird Convertible
Location:Penzance, Cornwall
Yes that's how the filters always look when the motor is running.

OK you can keep on wasting time and money chasing the fuel problem because its your time and money but the fuel problem you think you have is not what you should be looking at.

Trust me I work on these old cars all day every day. I own 4 at the moment. I have owned over 70 american cars in the last 36 years and I'm sure that the fuel problem you describe is not what is affecting your motor.

I would still say it electrical or timing.


Top
   
 Post subject: Re: Strange Problem
PostPosted:Mon Jun 08, 2015 9:59 am 
Offline
Big Block
User avatar

Joined:Sat Jun 28, 2014 6:55 pm
Posts:808
Location:Croxley Green, Hertfordshire
Got to agree with pa I'm afraid, I also think you're barking up the wrong tree

_________________
1997 30th Anniversary SS SLP
1993 GMC Typhoon


Top
   
Display posts from previous: Sort by 
Post new topic Reply to topic  [50 posts ]  Go to pagePrevious12345Next

All times are UTC


Who is online

Users browsing this forum: No registered users and 11 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Limited