7mge hesitating to start!? - Toyota Nation Forum : Toyota Car and Truck Forums
Cressida Forum No one can deny the Cressida has a solid platform. A cult Toyota classic.

 1Likes
  • 1 Post By DannoXYZ
 
LinkBack Thread Tools Display Modes
post #1 of 13 Old 06-28-2019, 02:04 AM Thread Starter
New TN User
 
Str86ix's Avatar
 
Join Date: Apr 2019
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
7mge hesitating to start!?

Ok so I’ve had my mx83 for a while now. It’s stock down to the bone. 7mge with only 52 thousand miles on her but recently it started giving me a problem at start up. I know, I know “here we go again” ... Ok so the problem only occurs on a cold start or if I let the car sit for about an hour.. when I go to start it, it cranks for almost 10 seconds before it begins to struggle to keep itself on.. a quick 1 or 2 seconds of struggling and the engine will bump itself up to its normal 1k rpm at cold start. If I let it idle for about 10 minutes then turn it off and wait a minute or two then try starting it again it starts without any hesitation at all, a quick turn of the key and “vroom” SHE’S ALIVE!.. so it has to do something with the engine having trouble building pressure either in the fuel pump or the oil pump.. my distributor is leaking oil pretty bad so I have no idea if that could cause the problem but I was thinking it could be a fuel problem... I haven’t had a change to look at my baby because I’ve been working a lot of hours to save up for a new suspension for her but now shes hesitating to start so I think I’m going to have to do more internal work before continuing with the suspension 😞 ... please help me with my “financial mistake”, anything helps, either it’s personal experience or just a suggestion will be highly appreciated, but whatever you do don’t tell me to get rid of it, thank you. 🙂
Str86ix is offline  
Sponsored Links
Advertisement
 
post #2 of 13 Old 06-29-2019, 04:13 PM
Toyota Collector
 
71Corolla's Avatar
 
Join Date: Jan 2007
Location: Canada
Posts: 11,753
Mentioned: 78 Post(s)
Tagged: 0 Thread(s)
Quoted: 2460 Post(s)
Thanks: 544
Thanked 1,379 Times in 1,288 Posts
iTrader Score: 5 reviews
This is the #1 suspect
https://www.ebay.com/itm/132815797322
any smell of fuel?

2000 Lexus ES300 Millenium Edition
1990 Camry LE V6 Anniversary Edition 5-Speed
1990 Camry LE V6 WAGON
1987 Camry LE I4 5-Speed
71Corolla is online now  
post #3 of 13 Old 06-29-2019, 10:13 PM
Senior TN Member
 
Join Date: Jan 2009
Location: S.F. East Bay
Posts: 7,347
Mentioned: 47 Post(s)
Tagged: 0 Thread(s)
Quoted: 1881 Post(s)
Thanks: 109
Thanked 816 Times in 750 Posts
Lifetime Supreme Member
iTrader Score: 0 reviews
The engine-coolant temp-sensor ECT is also commonly culprit. This tells ECU that engine is cold and ECU does cold-start cycle with fuel-enrichment. Easy enough to test ECT in pot of water and multimeter.

If you suspect fuel-pressure, then hook up fuel-pressure gauge to fuel-rail monitor actual fuel-pressure and compare to values given in FSM.
DannoXYZ is offline  
Sponsored Links
Advertisement
 
post #4 of 13 Old 07-01-2019, 03:32 PM Thread Starter
New TN User
 
Str86ix's Avatar
 
Join Date: Apr 2019
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
Quote:
Originally Posted by 71Corolla View Post
This is the #1 suspect
https://www.ebay.com/itm/132815797322
any smell of fuel?
yes smells a lot like fuel.. I’ve never smelt fuel like that but I guess it’s what 91 smells like
Str86ix is offline  
post #5 of 13 Old 07-01-2019, 03:33 PM Thread Starter
New TN User
 
Str86ix's Avatar
 
Join Date: Apr 2019
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
Quote:
Originally Posted by DannoXYZ View Post
The engine-coolant temp-sensor ECT is also commonly culprit. This tells ECU that engine is cold and ECU does cold-start cycle with fuel-enrichment. Easy enough to test ECT in pot of water and multimeter.

If you suspect fuel-pressure, then hook up fuel-pressure gauge to fuel-rail monitor actual fuel-pressure and compare to values given in FSM.
do I hook up the fuel pressure gauge to the line in the back of the fuel rail or to the line that goes into the fpr ?

Last edited by Str86ix; 07-01-2019 at 05:08 PM.
Str86ix is offline  
post #6 of 13 Old 07-01-2019, 08:33 PM
one turbo is one too few
 
bgrieger's Avatar
 
Join Date: May 2002
Location: Toronto
Posts: 3,613
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 33 Post(s)
Thanks: 85
Thanked 123 Times in 105 Posts
Lifetime Supreme Member
iTrader Score: 1 reviews
so long as it is on the pressure side of the regulator it would work for you. Whichever end of the rail is easier to access.
bgrieger is offline  
post #7 of 13 Old 07-03-2019, 04:55 AM
Senior TN Member
 
Join Date: Jan 2009
Location: S.F. East Bay
Posts: 7,347
Mentioned: 47 Post(s)
Tagged: 0 Thread(s)
Quoted: 1881 Post(s)
Thanks: 109
Thanked 816 Times in 750 Posts
Lifetime Supreme Member
iTrader Score: 0 reviews
Quote:
Originally Posted by Str86ix View Post
do I hook up the fuel pressure gauge to the line in the back of the fuel rail or to the line that goes into the fpr ?
Line at FPR is fuel-return with no pressure. I think you can use a double-banjo bolt to attach gauge to inlet at back of rail.

Can also attach to outlet of fuel-filter.

Or can attach pressure-sensor for gauge inside cabin.

You can also drill and tap front of rail for gauge. I usually have one permanently on any car I modify for tuning purposes.

stepho likes this.
DannoXYZ is offline  
post #8 of 13 Old 07-11-2019, 11:49 PM Thread Starter
New TN User
 
Str86ix's Avatar
 
Join Date: Apr 2019
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
Quote:
Originally Posted by DannoXYZ View Post
Quote:
Originally Posted by Str86ix View Post
do I hook up the fuel pressure gauge to the line in the back of the fuel rail or to the line that goes into the fpr ?
Line at FPR is fuel-return with no pressure. I think you can use a double-banjo bolt to attach gauge to inlet at back of rail.

Can also attach to outlet of fuel-filter.

Or can attach pressure-sensor for gauge inside cabin.

You can also drill and tap front of rail for gauge. I usually have one permanently on any car I modify for tuning purposes.

this is super smart I want to have one inside the cabin by my dash gauges how would I go about doing this? I also want a oil pressure gauge since the cressidas don’t come with one
Str86ix is offline  
post #9 of 13 Old 07-12-2019, 03:19 AM
Senior TN Member
 
Join Date: Jan 2009
Location: S.F. East Bay
Posts: 7,347
Mentioned: 47 Post(s)
Tagged: 0 Thread(s)
Quoted: 1881 Post(s)
Thanks: 109
Thanked 816 Times in 750 Posts
Lifetime Supreme Member
iTrader Score: 0 reviews
DannoXYZ is offline  
post #10 of 13 Old 07-12-2019, 03:47 PM Thread Starter
New TN User
 
Str86ix's Avatar
 
Join Date: Apr 2019
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
Str86ix is offline  
post #11 of 13 Old 07-12-2019, 05:02 PM Thread Starter
New TN User
 
Str86ix's Avatar
 
Join Date: Apr 2019
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
Update on the car:
I turn it on the other day after letting it sit in the garage for about a week and as soon as I turn the key a huge puff of smoke came out of the exhaust and the rpms shot to 2k (usually only goes to about 1500rpm ).. I quickly turn off the car and tried starting it again and it started up fine ??? No more white smoke and the car idled great I couldn’t smell the sweet aroma of coolant so I don’t think the smoke could’ve been a head gasket issue but the smoke did look white or maybe it was grey I’m not sure the lighting in my garage is dim so I couldn’t tell... could this be a fuel problem?
Str86ix is offline  
post #12 of 13 Old 07-12-2019, 05:03 PM Thread Starter
New TN User
 
Str86ix's Avatar
 
Join Date: Apr 2019
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
I haven’t got the chance to go out and buy a fuel Pressure testing kit but hopefully I will this weekend
Str86ix is offline  
post #13 of 13 Old 07-17-2019, 09:32 PM
Senior TN Member
 
Join Date: Jan 2009
Location: S.F. East Bay
Posts: 7,347
Mentioned: 47 Post(s)
Tagged: 0 Thread(s)
Quoted: 1881 Post(s)
Thanks: 109
Thanked 816 Times in 750 Posts
Lifetime Supreme Member
iTrader Score: 0 reviews
For cars sitting a while, smoke may be oil. Take time to sneak past rings and valve-stem seals.
DannoXYZ is offline  
Sponsored Links
Advertisement
 
Reply

  Toyota Nation Forum : Toyota Car and Truck Forums > Toyota Passenger and Sports Car Forums > Cressida Forum

Bookmarks

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome